by | Sep 27, 2025
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R – TDS 1/3
Core-Bond B600R
Core-Bond B650R
Core-Bond B750R
Core Bedding Adhesive
Product Overview
Core-Bond B600R, Core-Bond B650R and Core-Bond B750R are high quality isophthalic polyester resin based core
bonding adhesives specifically formulated for use with structural foam and balsa cores. They are catalysed with standard
MEKP catalyst. It is important to fill all the kerfs and cuts in contoured foam or balsa and have no air entrapment between
the core and the laminate. Priming the core with catalysed resin is recommended practice particularly for higher density
cores. These materials can be applied with a spray applicator or hand trowel.
Features and Benefits
Light weight Half the weight of glass and resin laminate
Smooth consistency Reduced emissions compared to glass and resin
Non sagging Long shelf life
Very low shrink Proven chemistry, long track record
Characteristics Using 1.25% by weight with MEKP Catalyst
A standard 9% active oxygen MEKP catalyst is recommended such as DDM-9, MEKP-9, etc.
Characteristics Typical Value
Working Time/Geltime
1
30 45 Minutes
Fixture Time
2
3-4 Hours
Gap Filling 0.030 inch minimum
1. Geltime measured with 100g mass of adhesive at 75
o
F
2. Time taken at 75 F (ambient temperature) to achieve 80% strength in lap-shear tests
Liquid Properties
Property B600R B650R B750R
Viscosity
3
52,000 64,000 cP 100,000-140,000 cP 116,000-130,000 cP
Specific Gravity 0.57-0.63 0.62-0.68 0.72-0.78
Shelf Life
5
12 Months 12 Months 12 Months
3. Measured using Brookfield HAF with T-C spindle at 5 rpm at 75 F,
4. Mix ratio based on volume and weight for both machine dispensing and hand mixing.
5. Shelf life is defined from date of manufacture when stored under recommended conditions.
Typical Material Properties
Property B600R B650R B750R
Hardness Shore D 60 minimum 60 minimum 60 minimum
Tensile Strength 1450 psi 1450 psi 2000 psi
Tensile Modulus 145 ksi 145 ksi 200 ksi
Tensile Strain 2% 2% 1%
Water Absorption ISO 62 0.0028 oz 0.0028 oz 0.0028 oz
Linear Shrinkage < 1.0% < 1.0% < 1.0%
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R - TDS 2/3
Coverage
Following estimates are based on tests on typical flat laminate roughness. Add material for curvature (opening kerfs and
cuts) to ensure full filling of all the voids within the sandwich laminate.
Saw cut foam
Core-Bond Yield for Saw Cut Structural Foams (estimate)
Core Thickness 1
Adhesive Thickness 1.5 mm 2.0 mm 3.0 mm 3.5 mm
Yield (rounded) 27 ft
2
/gallon 20 ft
2
/gallon 14 ft
2
/gallon 12 ft
2
/gallon
Balsa or knife-cut foams
Core-Bond Yield for Knife Cut Structural Foams or Balsa (estimate)
Core Thickness 1
Adhesive Thickness 1.0 mm 1.5 mm 2.0 mm 2.0 mm
Yield (rounded) 41 ft
2
/gallon 27 ft
2
/gallon 20 ft
2
/gallon 20 ft
2
/gallon
Surface Preparation
As with all adhesives, maximum performance is only achieved with adequate surface preparation. When bonding the
back surface of (polyester) GRP, a simple solvent wipe with acetone is satisfactory pre-treatment to clean and degrease
the surface. However, for gelcoated GRP surfaces and for other substrates, degrease using acetone or similar followed
by abrasion and a final degrease is recommended.
For chemical adhesion to the laminate it is important to bond within the secondary bonding window specified by the resin
manufacturer. This is usually between 24 and 72 hours.
Applications
The triple digit series of Core-Bond are promoted to gel in 45 minutes at 75
o
F with a standard MEKP catalyst. Never
catalyse below 0.75% or above 2.25% by weight. Contents may settle in during storage and shipment therefore it is
recommended to mix the material prior to catalyzation to ensure homogeneity. Using a notched trowel apply the correct
thickness of material for your core choice and surface curvature. The higher density and viscosity Core-Bond B750R is
better suited for vertical surfaces to eliminate any sagging.
Core material should be primed with a catalysed resin to improve the bond. An orthophthalic based resin with low styrene
is recommended such as the Priming Resin R101 from Scott Bader. Some isophthalic or vinyl ester resins are not
suitable for priming PVC or SAN foams. If in doubt: test! Apply the right amount of priming resin to the core material
avoiding excess. The texture of the core should remain visible.
After bonding tap the surface of the core to test for any voids using a coin. A dull or hollow sound will indicate voids.
Repair areas with voids before final lamination.
Refer to the Core-Bond Manual for more detailed information on core bedding methods.
Contact your local Scott Bader representative for questions or assistance with the selection of adhesives for your use.
This product is intended for use by skilled individuals at their own risk. Recommendations contained herein are based on
information we believe to be reliable. The properties and strength values obtained under controlled conditions at the
Scott Bader laboratory.
Storage
Store between 60 and 80 F in the original, unopened container in a dry, well ventilated place. Protect from direct
sunlight. Exposure to temperatures outside of these conditions will reduce shelf life. Ideally containers should be opened
only immediately prior to use.
Packaging
Available in 5 gallon (19 litre) plastic or metal pails and 50 gallons (189 litre) drums.
Health and Safety
See separate Safety Data Sheet.
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R - TDS 3/3
Updated: November 2017
All information on this data sheet is based on laboratory testing and is not intended for design purposes. Scott Bader makes no representations or warranties of any
kind concerning this data. Due to variance of storage, handling and application of these materials, Scott Bader cannot accept liability for results obtained. The
manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is not implied by this publication.
SCOTT BADER North America
4280 Hudson Drive, Stow, Ohio, United States, 44224
Telephone: +1 (330) 920-4410
Facsimile: +1 (330) 920-4415
www.scottbader-na.com
SCOTT BADER COMPANY LIMITED
Wollaston, Wellingborough, Northamptonshire, NN29 7RL
Telephone: +44 (0) 1933 663100
Facsimile: +44 (0) 1933 666623
www.scottbader.com
by | Sep 27, 2025
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R – TDS 1/3
Core-Bond B600R
Core-Bond B650R
Core-Bond B750R
Core Bedding Adhesive
Product Overview
Core-Bond B600R, Core-Bond B650R and Core-Bond B750R are high quality isophthalic polyester resin based core
bonding adhesives specifically formulated for use with structural foam and balsa cores. They are catalysed with standard
MEKP catalyst. It is important to fill all the kerfs and cuts in contoured foam or balsa and have no air entrapment between
the core and the laminate. Priming the core with catalysed resin is recommended practice particularly for higher density
cores. These materials can be applied with a spray applicator or hand trowel.
Features and Benefits
Light weight Half the weight of glass and resin laminate
Smooth consistency Reduced emissions compared to glass and resin
Non sagging Long shelf life
Very low shrink Proven chemistry, long track record
Characteristics Using 1.25% by weight with MEKP Catalyst
A standard 9% active oxygen MEKP catalyst is recommended such as DDM-9, MEKP-9, etc.
Characteristics Typical Value
Working Time/Geltime
1
30 45 Minutes
Fixture Time
2
3-4 Hours
Gap Filling 0.030 inch minimum
1. Geltime measured with 100g mass of adhesive at 75
o
F
2. Time taken at 75 F (ambient temperature) to achieve 80% strength in lap-shear tests
Liquid Properties
Property B600R B650R B750R
Viscosity
3
52,000 64,000 cP 100,000-140,000 cP 116,000-130,000 cP
Specific Gravity 0.57-0.63 0.62-0.68 0.72-0.78
Shelf Life
5
12 Months 12 Months 12 Months
3. Measured using Brookfield HAF with T-C spindle at 5 rpm at 75 F,
4. Mix ratio based on volume and weight for both machine dispensing and hand mixing.
5. Shelf life is defined from date of manufacture when stored under recommended conditions.
Typical Material Properties
Property B600R B650R B750R
Hardness Shore D 60 minimum 60 minimum 60 minimum
Tensile Strength 1450 psi 1450 psi 2000 psi
Tensile Modulus 145 ksi 145 ksi 200 ksi
Tensile Strain 2% 2% 1%
Water Absorption ISO 62 0.0028 oz 0.0028 oz 0.0028 oz
Linear Shrinkage < 1.0% < 1.0% < 1.0%
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R - TDS 2/3
Coverage
Following estimates are based on tests on typical flat laminate roughness. Add material for curvature (opening kerfs and
cuts) to ensure full filling of all the voids within the sandwich laminate.
Saw cut foam
Core-Bond Yield for Saw Cut Structural Foams (estimate)
Core Thickness 1
Adhesive Thickness 1.5 mm 2.0 mm 3.0 mm 3.5 mm
Yield (rounded) 27 ft
2
/gallon 20 ft
2
/gallon 14 ft
2
/gallon 12 ft
2
/gallon
Balsa or knife-cut foams
Core-Bond Yield for Knife Cut Structural Foams or Balsa (estimate)
Core Thickness 1
Adhesive Thickness 1.0 mm 1.5 mm 2.0 mm 2.0 mm
Yield (rounded) 41 ft
2
/gallon 27 ft
2
/gallon 20 ft
2
/gallon 20 ft
2
/gallon
Surface Preparation
As with all adhesives, maximum performance is only achieved with adequate surface preparation. When bonding the
back surface of (polyester) GRP, a simple solvent wipe with acetone is satisfactory pre-treatment to clean and degrease
the surface. However, for gelcoated GRP surfaces and for other substrates, degrease using acetone or similar followed
by abrasion and a final degrease is recommended.
For chemical adhesion to the laminate it is important to bond within the secondary bonding window specified by the resin
manufacturer. This is usually between 24 and 72 hours.
Applications
The triple digit series of Core-Bond are promoted to gel in 45 minutes at 75
o
F with a standard MEKP catalyst. Never
catalyse below 0.75% or above 2.25% by weight. Contents may settle in during storage and shipment therefore it is
recommended to mix the material prior to catalyzation to ensure homogeneity. Using a notched trowel apply the correct
thickness of material for your core choice and surface curvature. The higher density and viscosity Core-Bond B750R is
better suited for vertical surfaces to eliminate any sagging.
Core material should be primed with a catalysed resin to improve the bond. An orthophthalic based resin with low styrene
is recommended such as the Priming Resin R101 from Scott Bader. Some isophthalic or vinyl ester resins are not
suitable for priming PVC or SAN foams. If in doubt: test! Apply the right amount of priming resin to the core material
avoiding excess. The texture of the core should remain visible.
After bonding tap the surface of the core to test for any voids using a coin. A dull or hollow sound will indicate voids.
Repair areas with voids before final lamination.
Refer to the Core-Bond Manual for more detailed information on core bedding methods.
Contact your local Scott Bader representative for questions or assistance with the selection of adhesives for your use.
This product is intended for use by skilled individuals at their own risk. Recommendations contained herein are based on
information we believe to be reliable. The properties and strength values obtained under controlled conditions at the
Scott Bader laboratory.
Storage
Store between 60 and 80 F in the original, unopened container in a dry, well ventilated place. Protect from direct
sunlight. Exposure to temperatures outside of these conditions will reduce shelf life. Ideally containers should be opened
only immediately prior to use.
Packaging
Available in 5 gallon (19 litre) plastic or metal pails and 50 gallons (189 litre) drums.
Health and Safety
See separate Safety Data Sheet.
Core-Bond B600R, Core-Bond B650R, Core-Bond B750R - TDS 3/3
Updated: November 2017
All information on this data sheet is based on laboratory testing and is not intended for design purposes. Scott Bader makes no representations or warranties of any
kind concerning this data. Due to variance of storage, handling and application of these materials, Scott Bader cannot accept liability for results obtained. The
manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is not implied by this publication.
SCOTT BADER North America
4280 Hudson Drive, Stow, Ohio, United States, 44224
Telephone: +1 (330) 920-4410
Facsimile: +1 (330) 920-4415
www.scottbader-na.com
SCOTT BADER COMPANY LIMITED
Wollaston, Wellingborough, Northamptonshire, NN29 7RL
Telephone: +44 (0) 1933 663100
Facsimile: +44 (0) 1933 666623
www.scottbader.com
by | Sep 27, 2025
POLY-BOND B39 – TDS 1/3
POLY-BOND B39
Polyester-Based Pumpable General Purpose
Adhesive
Introduction
Poly-Bond B39 is a high strength pumpable polyester adhesive formulated for production environment in boatbuilding
and general fiberglass fabrication.
Main Features
High-strength adhesive for poly/vinylester laminates
Reliable strength in thin and thick bondlines
Excellent wet-out of surface – strong bonds to poly/vinylester laminates
No volume loss during pumping
Hangs well on vertical and inverted surfaces
Stacks well on top of stringers
Long geltime and fast cure for quick demolding
Fast pumping speed with low pumping pressures
B39 was formulated to provide reliable structural bonds in both thin and thick bondlines (1/8 to 1 , 3 25mm). B39 has
low shrinkage, low exotherm and no volume loss during pumping. The long geltime and fast cure make it ideal for the
bonding and quick demolding of large parts such as fiberglass overhead and interior liners and molded structural grids.
B39 hangs well on vertical and inverted surfaces, and stacks well on top of stringers. For bondline thickness of 1 (25
mm) and less, the exotherm is low, reducing the chance of print-through in thin laminates. B39 can also be used for hull-
to-deck joints and strake filling. B39 uses MEKP catalysts, and is available in S (Summer) and W (Winter) grades.
General Properties
Color Light Grey
Density 1-1.1 g/cc; 8.3 9.2 lbs. gallon
Shrinkage Less than 1%
Thixotropy Non-sagging
Capillary Absorption None, non-porous surface
Viscosity 280,000 320,000 cps
Exotherm, 100 gram mass 210 270 F (100 135 C)
Exotherm, 1 (25.4mm) Bondline 150 170 F (66 77 C)
Recommended Bondline Thickness 1/8 1 (3 25mm)
Hardness after 24 Hours Shore D 70 min. value
Catalyzation
5 Gallon Pails: Mix contents before catalyzation with a paddle type mixer. After catalyzation, mix again, with care to
scrape edges and bottom of pail. If low temperature prevents a complete cure, increase shop temperatures, not the
catalyst level. Assure that parts to be bonded have reached shop temperature. Drums: Poly-Bond B39, B39HP is
dispersed from the drum by gun application, with internal mix catalyst systems. Dispension guns are supplied by:
Magnum Venum Products, www.mvpind.com; GS Manufacturing, www.gsmfg.com; Glas-Craft, www.glascraft.com.
Surface Preparation
Surface to be bonded should be dry, clean and free of dust, oil or grease. Check resin system for secondary bonding
time window to obtain a chemical bond. If surface is sanded, assure that no dust remains. Vacuum surface rather than
using an airhose which only redistributes the dust. Avoid cleaning surface with solvents.
POLY-BOND B39 – TDS 2/3
Catalyst Charts, Poly-Bond B39
Poly-Bond B39 S (Summer) Catalization Chart. 50 – 60 Minute Geltime
Poly-Bond B39 W (Winter) Catalization Chart. 50 – 60 Minute Geltime
These catalization charts have been generated from laboratory conditions and a constant controlled setting. Specific Gravity of the Poly-
Bond B39 is 1.05 g/cc. The laboratory moisture level is less than 20% during these tests. Humidity will affect the results shown above.
The information contained in this chart should be used as a base point. Geltimes must be confirmed at shop conditions for use in
production environments.
Shelf Life
Poly-Bond B39 is a stable products, and adequate long-term storage conditions will result in a shelf-life of 12 months or
more. After this time, the geltime may drift, and should be checked before use.
Storage
The product should be kept in securely enclosed containers. Storage should be in a dry place out of direct sunlight. The
temperature should be between 65-77 F (18-25 C). Allow Poly-Bond to reach shop temperature before using. Keep
containers closed to eliminate styrene evaporation, and to avoid change in properties of the material.
NOTICE: All precautionary labels and notices should be read and understood by all supervisory personnel and employees. Consult OSHA and government regulations for additional
safety and health information. Purchaser is responsible for complying with all federal, state, or local laws and regulations covering the use of this product. The information contained
herein is correct to the best of our knowledge. Please check our website for latest updates. The recommendations or suggestions contained in this bulletin are made without
guarantee or representation as to results. We suggest that these recommendations and suggestions are evaluated by the purchaser s technical staff prior to use. Our responsibility
for claims arising from breach of warranty, negligence, or otherwise is limited to the purchase price of the material. All values can be revised due to ongoing testing and are subject to
change without notice.
Version 1: June 2016
All information on this data sheet is based on laboratory testing and is not intended for design purposes. Scott Bader makes no representations or warranties of any
kind concerning this data. Due to variance of storage, handling and application of these materials, Scott Bader cannot accept liability for results obtained. The
manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is not implied by this publication.
SCOTT BADER COMPANY LIMITED
Wollaston, Wellingborough, Northamptonshire, NN29 7RL
Telephone: +44 (0) 1933 663100
Facsimile: +44 (0) 1933 666623
www.scottbader.com
Plant: SCOTT BADER – ATC
2400 Canadian Street, # 303
Drummondville, Quebec J2C 7W3
Tel: 819-477-1752
Crompton Hi-Point 90 (1.11 g/cc) Norox MEKP-9/Norpol # 1 (1.11 -1.14 g/cc) Arkema Luperox DDM-9 (1.004 g/cc)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
75 24 3.5 125.1 138.9 75 24 3.00 108.2 119.1 75 24 2.4 94.9 95.3
80 27 2.7 96.5 107.7 80 27 2.35 84.8 93.3 80 27 1.9 75.1 75.4
85 29 2.2 78.7 87.3 85 29 1.8 69.4 71.4 85 29 1.5 59.3 59.5
90 32 1.75 62.6 69.5 90 32 1.45 52.3 57.6 90 32 1.2 47.4 47.6
95 35 1.4 51.8 57.6 95 35 1.25 45.1 49.6 95 35 1.00 39.5 39.7
Crompton Hi-Point 90 (1.11 g/cc) Norox MEKP-9/Norpol # 1 (1.11 -1.14 g/cc) Arkema Luperox DDM-9 (1.004 g/cc)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
60 16 3.4 121.6 134.9 60 16 2.7 97.4 107.2 60 16 2.5 98.8 99.2
65 18 2.5 89.4 99.2 65 18 2.2 79.4 87.3 65 18 1.8 71.2 71.4
70 21 2.1 75.1 83.3 70 21 1.8 64.9 71.4 70 21 1.45 57.3 57.6
75 24 1.8 64.4 71.4 75 24 1.4 50.5 55.6 75 24 1.2 47.7 47.6
80 27 1.4 50.1 55.6 80 27 1.15 41.4 45.6 80 27 1.00 39.5 39.7
SCOTT BADER COMPANY INC.
4280 Hudson Drive, Stow, OH 44224, 1-800-839-4765
Telephone: +1 330 920 4410
www.scottbader.com/na
POLY-BOND B39 – TDS 3/3
by | Sep 27, 2025
POLY-BOND B39 – TDS 1/3
POLY-BOND B39
Polyester-Based Pumpable General Purpose
Adhesive
Introduction
Poly-Bond B39 is a high strength pumpable polyester adhesive formulated for production environment in boatbuilding
and general fiberglass fabrication.
Main Features
High-strength adhesive for poly/vinylester laminates
Reliable strength in thin and thick bondlines
Excellent wet-out of surface – strong bonds to poly/vinylester laminates
No volume loss during pumping
Hangs well on vertical and inverted surfaces
Stacks well on top of stringers
Long geltime and fast cure for quick demolding
Fast pumping speed with low pumping pressures
B39 was formulated to provide reliable structural bonds in both thin and thick bondlines (1/8 to 1 , 3 25mm). B39 has
low shrinkage, low exotherm and no volume loss during pumping. The long geltime and fast cure make it ideal for the
bonding and quick demolding of large parts such as fiberglass overhead and interior liners and molded structural grids.
B39 hangs well on vertical and inverted surfaces, and stacks well on top of stringers. For bondline thickness of 1 (25
mm) and less, the exotherm is low, reducing the chance of print-through in thin laminates. B39 can also be used for hull-
to-deck joints and strake filling. B39 uses MEKP catalysts, and is available in S (Summer) and W (Winter) grades.
General Properties
Color Light Grey
Density 1-1.1 g/cc; 8.3 9.2 lbs. gallon
Shrinkage Less than 1%
Thixotropy Non-sagging
Capillary Absorption None, non-porous surface
Viscosity 280,000 320,000 cps
Exotherm, 100 gram mass 210 270 F (100 135 C)
Exotherm, 1 (25.4mm) Bondline 150 170 F (66 77 C)
Recommended Bondline Thickness 1/8 1 (3 25mm)
Hardness after 24 Hours Shore D 70 min. value
Catalyzation
5 Gallon Pails: Mix contents before catalyzation with a paddle type mixer. After catalyzation, mix again, with care to
scrape edges and bottom of pail. If low temperature prevents a complete cure, increase shop temperatures, not the
catalyst level. Assure that parts to be bonded have reached shop temperature. Drums: Poly-Bond B39, B39HP is
dispersed from the drum by gun application, with internal mix catalyst systems. Dispension guns are supplied by:
Magnum Venum Products, www.mvpind.com; GS Manufacturing, www.gsmfg.com; Glas-Craft, www.glascraft.com.
Surface Preparation
Surface to be bonded should be dry, clean and free of dust, oil or grease. Check resin system for secondary bonding
time window to obtain a chemical bond. If surface is sanded, assure that no dust remains. Vacuum surface rather than
using an airhose which only redistributes the dust. Avoid cleaning surface with solvents.
POLY-BOND B39 – TDS 2/3
Catalyst Charts, Poly-Bond B39
Poly-Bond B39 S (Summer) Catalization Chart. 50 – 60 Minute Geltime
Poly-Bond B39 W (Winter) Catalization Chart. 50 – 60 Minute Geltime
These catalization charts have been generated from laboratory conditions and a constant controlled setting. Specific Gravity of the Poly-
Bond B39 is 1.05 g/cc. The laboratory moisture level is less than 20% during these tests. Humidity will affect the results shown above.
The information contained in this chart should be used as a base point. Geltimes must be confirmed at shop conditions for use in
production environments.
Shelf Life
Poly-Bond B39 is a stable products, and adequate long-term storage conditions will result in a shelf-life of 12 months or
more. After this time, the geltime may drift, and should be checked before use.
Storage
The product should be kept in securely enclosed containers. Storage should be in a dry place out of direct sunlight. The
temperature should be between 65-77 F (18-25 C). Allow Poly-Bond to reach shop temperature before using. Keep
containers closed to eliminate styrene evaporation, and to avoid change in properties of the material.
NOTICE: All precautionary labels and notices should be read and understood by all supervisory personnel and employees. Consult OSHA and government regulations for additional
safety and health information. Purchaser is responsible for complying with all federal, state, or local laws and regulations covering the use of this product. The information contained
herein is correct to the best of our knowledge. Please check our website for latest updates. The recommendations or suggestions contained in this bulletin are made without
guarantee or representation as to results. We suggest that these recommendations and suggestions are evaluated by the purchaser s technical staff prior to use. Our responsibility
for claims arising from breach of warranty, negligence, or otherwise is limited to the purchase price of the material. All values can be revised due to ongoing testing and are subject to
change without notice.
Version 1: June 2016
All information on this data sheet is based on laboratory testing and is not intended for design purposes. Scott Bader makes no representations or warranties of any
kind concerning this data. Due to variance of storage, handling and application of these materials, Scott Bader cannot accept liability for results obtained. The
manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is not implied by this publication.
SCOTT BADER COMPANY LIMITED
Wollaston, Wellingborough, Northamptonshire, NN29 7RL
Telephone: +44 (0) 1933 663100
Facsimile: +44 (0) 1933 666623
www.scottbader.com
Plant: SCOTT BADER – ATC
2400 Canadian Street, # 303
Drummondville, Quebec J2C 7W3
Tel: 819-477-1752
Crompton Hi-Point 90 (1.11 g/cc) Norox MEKP-9/Norpol # 1 (1.11 -1.14 g/cc) Arkema Luperox DDM-9 (1.004 g/cc)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
75 24 3.5 125.1 138.9 75 24 3.00 108.2 119.1 75 24 2.4 94.9 95.3
80 27 2.7 96.5 107.7 80 27 2.35 84.8 93.3 80 27 1.9 75.1 75.4
85 29 2.2 78.7 87.3 85 29 1.8 69.4 71.4 85 29 1.5 59.3 59.5
90 32 1.75 62.6 69.5 90 32 1.45 52.3 57.6 90 32 1.2 47.4 47.6
95 35 1.4 51.8 57.6 95 35 1.25 45.1 49.6 95 35 1.00 39.5 39.7
Crompton Hi-Point 90 (1.11 g/cc) Norox MEKP-9/Norpol # 1 (1.11 -1.14 g/cc) Arkema Luperox DDM-9 (1.004 g/cc)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
Temperature
F C
% of
Catalyst
(by
Weight)
cc/Gallon
(3.78 l)
Grams/Gallon
(3.78 l)
60 16 3.4 121.6 134.9 60 16 2.7 97.4 107.2 60 16 2.5 98.8 99.2
65 18 2.5 89.4 99.2 65 18 2.2 79.4 87.3 65 18 1.8 71.2 71.4
70 21 2.1 75.1 83.3 70 21 1.8 64.9 71.4 70 21 1.45 57.3 57.6
75 24 1.8 64.4 71.4 75 24 1.4 50.5 55.6 75 24 1.2 47.7 47.6
80 27 1.4 50.1 55.6 80 27 1.15 41.4 45.6 80 27 1.00 39.5 39.7
SCOTT BADER COMPANY INC.
4280 Hudson Drive, Stow, OH 44224, 1-800-839-4765
Telephone: +1 330 920 4410
www.scottbader.com/na
POLY-BOND B39 – TDS 3/3
by | Sep 27, 2025
AP-3220 A/B Page 1 of 2 Date: 07/03/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
ADHESIVES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
Armor-Bond Rigid
AP-3220 A/B
70 SHORE D POLYURETHANE ADHESIVE
AP-3220 is a two-part, rigid polyurethane adhesive with a 1-1.5 minute work time. Designed to bond together many of BJB s
semi-rigid and rigid polyurethane cast products, this adhesive exhibits excellent bond strength and shock absorption. Great for
general purpose bonding, Automotive, Aerospace, 3D Printed Parts, Composites, Movie Special Effects, and much more. AP-3220
is available in 50ml cartridges. 50ml dispensing guns are sold separately.
RoHS/REACH Compliant Excellent Adhesion Thixotropic Bead
Quick Setting Convenient 1:1 (pbv) mix ratio High Impact
PHYSICAL PROPERTIES TEST METHOD
ELEVATED
TEMPERATURE CU RE
Hardness, Shore D ASTM D2240-04e1 70 5
Density (g/cc) ASTM D792-00 1.145
Cubic Inches per Pound N/A 24.96
Color/Appearance Visual Translucent Pale Yellow
Dielectric Constant, 1 MHz ASTM D150-87 2.856
Dissipation Factor, 1 MHz ASTM D150-87 0.0179
1
Lap Shear (psi) Aluminum to Aluminum ASTM D1002-01 2,400
2
Lap Shear (psi) Aluminum to Aluminum ASTM D1002-01 2,800
Reported physical properties are based on test specimens cured for 24 hours at room temperature.
1
Test specimens cured 24 hours at room temperature, 77F (25C)
2
Test specimens cured 4 hours at room temperature and heat cured for 16 hours at 160 F (71.1 C)
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 90
Mix Ratio by volume 100 100
Specific Gravity @ 77 F (25 C) 1.163 1.054
Color Pale Amber Pale Yellow
Viscosity (cps) @ 77 F (25 C) Brookfield 1,430 2,870
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield Non-Flowable
Work Time, 10 g mass @ 77 F (25 C) 1 1.5 minutes
Thin Film Set Time 10 15 minutes
Properties above are typical and not for specifications.
AP-3220 A/B Page 2 of 2 Date: 07/03/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
NON-WARRANTY “Except for a warranty that materials substantially comply with the data presented in Manufacturer’s latest bulletin describing the product (the basis for this substantial
compliance is to be determined by the standard quality control tests generally performed by Manufacturer), all materials are sold “AS IS” and without any warranty express or implied as
to merchantability, fitness for a particular purpose, patent, trademark or copyright infringement, or as to any other matter. In no event shall Manufacturer’s liability for damages exceed
Manufacturer’s sale price of the particular quantity with respect to which damages are claimed.”
SURFACE PREPARATION:
Abrade and clean surfaces before bonding. For best results, a chemical wipe of surfaces with a clean solvent (e.g. Acetone) works best
to remove grease, dirt, or dust.
DIRECTIONS FOR CARTRIDGE USE:
Place cartridge into the dispense gun. Before attaching the mix tip, dispense a small amount of adhesive to ensure proper
flow on both sides. If there is a restriction, use a pointed object to clear any blockage. Once blockage is cleared, dispense a
small amount to verify flow.
Attach mix tip. Begin pumping the adhesive through the mix tip. It is advisable to dispense a small waste shot of material to
ensure both A & B are mixed properly.
When finished dispensing, leave the mix tip attached. Adhesive in the tip will cure, creating its own seal for storage should
there be remaining adhesive in cartridge.
Remove used mix tip when using cartridge again. Repeat steps above to dispense more adhesive.
COLOR VARIATIONS:
The color of the base material may vary slightly from batch to batch due to raw ingredients. Color variations will not affect the
cured physical properties. Exposing the material to various conditions such as heat and UV light will alter the color of the cured
system. Color stability is not guaranteed. This product can be pigmented, but you may see more color shift when using lighter
pigments.
STORAGE:
Store ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 3 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
50 ml Dual Cartridge 1 oz. 0.9 oz.
SAFETY PRECAUTIONS:
Use in a well-ventilated area. Avoid contact with skin using protective gloves and protective clothing. Repeated or prolonged contact
on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses or goggles
when handling this product.
IF CONTACT OCCURS:
Skin: Immediately wash with soap and water. Remove contaminated clothing and launder before reuse. It is not recommended
to remove resin from skin with solvents. Solvents only increase contact and dry skin. Seek qualified medical attention
if allergic reactions occur.
Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
Ingestion: If swallowed, call a physician immediately. Remove stomach contents by gastric suction or induce vomiting only as
directed by medical personnel. Never give anything by mouth to an unconscious person.
Refer to the Material Safety Data Sheet before using this product.
WARNING: This product can expose you to chemicals including Toluene, which are known to the State of California to cause
cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
AP-1230 A/B Page 1 of 2 Date: 11/15/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
ADHESIVES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
Armor-Bond Flex
AP-1230 A/B
70 SHORE A POLYURETHANE ADHESIVE
AP-1230 is a two-part, flexible polyurethane adhesive with a 3-4 minute work time. Designed to bond together many of BJB s
flexible polyurethane cast products, this adhesive exhibits excellent bond strength and shock absorption. AP-1230 can also be used
to bond BJB flexible polyurethane foams and other flexible substrates. Great for Medical Simulation Models, Fabrics, Cosplay
Foam Armor & Props, Movie Special Effects, and much more. AP-1230 is available in 50ml cartridges. 50ml dispensing guns are
sold separately.
RoHS/REACH Compliant Excellent Adhesion Thixotropic Bead
Quick Setting Convenient 1:1 (pbv) mix ratio Remains Flexible
PHYSICAL PROPERTIES TEST METHOD
ELEVATED
TEMPERATURE CU RE
Hardness, Shore A ASTM D2240-04e1 70 5
Density (g/cc) ASTM D792-00 1.081
Cubic Inches per Pound N/A 25.58
Color/Appearance Visual Translucent Pale Yellow
Dielectric Constant, 1 MHz ASTM D150-87 3.695
Dissipation Factor, 1 MHz ASTM D150-87 0.0722
Note: Reported physical properties are based on test specimens cured for 24 hours at room temperature.
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 91
Mix Ratio by volume 100 100
Specific Gravity @ 77 F (25 C) 1.121 1.018
Color Pale Yellow Pale Yellow
Viscosity (cps) @ 77 F (25 C) Brookfield 3,790 890
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield Non-Flowable
Work Time, 10 g mass @ 77 F (25 C) 3 4 minutes
Thin Film Set Time 15 minutes
Properties above are typical and not for specifications.
AP-1230 A/B Page 2 of 2 Date: 11/15/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
NON-WARRANTY “Except for a warranty that materials substantially comply with the data presented in Manufacturer’s latest bulletin describing the product (the basis for this substantial
compliance is to be determined by the standard quality control tests generally performed by Manufacturer), all materials are sold “AS IS” and without any warranty express or implied as
to merchantability, fitness for a particular purpose, patent, trademark or copyright infringement, or as to any other matter. In no event shall Manufacturer’s liability for damages exceed
Manufacturer’s sale price of the particular quantity with respect to which damages are claimed.”
SURFACE PREPARATION:
Abrade and clean surfaces before bonding. For best results, a chemical wipe of surfaces with a clean solvent (e.g. Acetone) works best
to remove grease, dirt, or dust.
DIRECTIONS FOR CARTRIDGE USE:
Place cartridge into the dispense gun. Before attaching the mix tip, dispense a small amount of adhesive to ensure proper
flow on both sides. If there is a restriction, use a pointed object to clear any blockage. Once blockage is cleared, dispense a
small amount to verify flow.
Attach mix tip. Begin pumping the adhesive through the mix tip. It is advisable to dispense a small waste shot of material to
ensure both A & B are mixed properly.
When finished dispensing, leave the mix tip attached. Adhesive in the tip will cure, creating its own seal for storage should
there be remaining adhesive in cartridge.
Remove used mix tip when using cartridge again. Repeat steps above to dispense more adhesive.
COLOR VARIATIONS:
The color of the base material may vary slightly from batch to batch due to raw ingredients. Color variations will not affect the
cured physical properties. Exposing the material to various conditions such as heat and UV light will alter the color of the cured
system. Color stability is not guaranteed. This product can be pigmented, but you may see more color shift when using lighter
pigments.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Sealed packages will have a shelf life of 3 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
50ml Dual Cartridge 1 oz. 0.91 oz.
SAFETY PRECAUTIONS:
Use in a well-ventilated area. Avoid contact with skin using protective gloves and protective clothing. Repeated or prolonged contact
on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses or goggles
when handling this product.
IF CONTACT OCCURS:
Skin: Immediately wash with soap and water. Remove contaminated clothing and launder before reuse. It is not recommended
to remove resin from skin with solvents. Solvents only increase contact and dry skin. Seek qualified medical attention
if allergic reactions occur.
Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
Ingestion: If swallowed, call a physician immediately. Remove stomach contents by gastric suction or induce vomiting only as
directed by medical personnel. Never give anything by mouth to an unconscious person.
WARNING: This product can expose you to chemicals including Ethyl acrylate, which are known to the State of California to
cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
NOTE:
Refer to the Safety Data Sheet before using this product. For processing tips and guides, please visit: learn.bjbmaterials.com to
discover additional information.
by | Sep 27, 2025
by | Sep 27, 2025
by | Sep 27, 2025
by | Sep 27, 2025
PRODUCT DATA SHEET
Sikaflex -291
Version 03.01 (04 – 2023), en_US
012001202914001000
PRODUCT DATA SHEET
Sikaflex -291
Multifunctional adhesive sealant for marine applications
TYPICAL PRODUCT DATA (FURTHER VALUES SEE SAFETY DATA SHEET)
Chemical base 1-component polyurethane
Color (CQP001-1) White, black
Cure mechanism Moisture-curing
Density (uncured) depending on color1.3 kg/l (10.8 lb/gal)
Non-sag properties Good
Application temperature ambient5 40 C (41 104 F)
Skin time (CQP019-1) 60 minutes A
Open time (CQP526-1) 45 minutes A
Curing speed (CQP049-1) (see diagram 1)
Shrinkage (CQP014-1) 5 %
Shore A hardness (CQP023-1 / ISO 48-4) 40
Tensile strength (CQP036-1 / ISO 527) 1.8 MPa (260 psi)
Elongation at break (CQP036-1 / ISO 527) 500 %
Tear propagation resistance (CQP045-1 / ISO 34) 6 N/mm (35 pli)
Service temperature (CQP513-1)
4 hours
1 hour
-50 90 C (-58 194 F)
160 C (320 F)
180 C (356 F)
Shelf life 12 months B
CQP = Corporate Quality Procedure A) 23 C (73 F) / 50 % r. h. B) storage below 25 C (77 F)
DESCRIPTION
Sikaflex -291 is a non-sag 1-component poly-
urethane sealant specifically developed for the
marine market, which cures on exposure to at-
mospheric moisture.
PRODUCT BENEFITS
Bonds well to a wide variety of substrates
Good aging and weathering resistance
Elastic
Low odor
Non-corrosive
Can be over painted
Can be sanded
Listed under NSF Proprietary Substances
and Nonfood Compounds (black and white)
AREAS OF APPLICATION
Sikaflex -291 is a multipurpose product for use
in marine constructions. It is suitable to make
elastic, vibration-resistant joint seals, and can
also be used for a variety of interior sealing ap-
plications. Sikaflex -291 bonds well to the ma-
terials commonly used in marine construction
like wood, metals, metal primers and paint
coatings (2-C systems), ceramic materials and
plastics (GRP, etc.). Sikaflex -291 must not be
used to seal plastics that are prone to stress
cracking (e.g. Plexiglas, Polycarbonate, etc.).
Once cured, Sikaflex -291 can easily be sanded
as required.
This product is suitable for experienced profes-
sional users only. Test with actual substrates
and conditions have to be performed to ensure
adhesion and material compatibility.
1 / 2
CURE MECHANISM
Sikaflex -291 cures by reaction with atmo-
spheric moisture. At low temperatures, the wa-
ter content of the air is generally lower and the
curing reaction proceeds somewhat slower (see
diagram 1).
Diagram 1: Curing speed Sikaflex -291
CHEMICAL RESISTANCE
Sikaflex -291 is generally resistant to fresh wa-
ter, seawater, diluted acids and diluted caustic
solutions; temporarily resistant to fuels, miner-
al oils, vegetable and animal fats and oils; not
resistant to organic acids, glycolic alcohol, con-
centrated mineral acids and caustic solutions or
solvents.
METHOD OF APPLICATION
Surface Preparation
Surfaces must be clean, dry and free from
grease, oil and dust.
Surface treatment depends on the specific
nature of the substrates and is crucial for a long
lasting bond. Suggestions for surface prepara-
tion may be found on the current edition of the
appropriate Sika Pre-treatment Chart. Consider
that these suggestions are based on experience
and have in any case to be verified by tests on
original substrates.
Application
Sikaflex -291 can be processed between 5 C
and 40 C (41 F and 104 F), but changes in re-
activity and application properties have to be
considered. The optimum temperature for sub-
strate and sealant is between 15 C and 25 C
(59 F and 77 F).
Sikaflex -291 can be processed with manual,
pneumatic or electric driven piston guns.
Tooling and finishing
Tooling and finishing must be carried out within
the skin time of the product. It is recommen-
ded using Sika Slick. Other finishing agents
must be tested for suitability and compatibility
prior the use.
Removal
Uncured Sikaflex -291 can be removed from
tools and equipment with Sika Remover-208
or another suitable solvent. Once cured, the
material can only be removed mechanically.
Hands and exposed skin have to be washed im-
mediately using a suitable industrial hand
cleaner and water.
Do not use solvents on skin!
Overpainting
Sikaflex -291 can be best painted after forma-
tion of a skin. Painting could be improved by
treating the joint surface with Sika Aktivator-
100 or Sika Aktivator-205 prior to paint pro-
cess. If the paint requires a baking process (>
80 C), best performance is achieved by allow-
ing the sealant to fully cure first. All paints have
to be tested by carrying preliminary trials under
manufacturing conditions.
The elasticity of paints is usually lower than
that of sealants. This could lead to cracking of
the paint in the joint area.
FURTHER INFORMATION
The information herein is offered for general
guidance only. Advice on specific applications is
available on request from the Technical Depart-
ment of Sika Industry.
Copies of the following publications are avail-
able on request:
Safety Data Sheets
Sika Pre-treatment Chart
For 1-Component Polyurethanes
General Guidelines
Bonding and Sealing with 1-component
Sikaflex
PACKAGING INFORMATION
Cartridge 300 ml
Unipack 600 ml
Tube 3 oz
BASIS OF PRODUCT DATA
All technical data stated in this document are
based on laboratory tests. Actual measured
data may vary due to circumstances beyond
our control.
ENVIRONMENTAL, HEALTH AND
SAFETY
For further information and advice regarding
transportation, handling, storage and disposal
of chemical products, user should refer to the
actual Safety Data Sheets containing physical,
environmental, toxicological and other safety
related data. User must read the current actual
Safety Data Sheets before using any products.
In case of an emergency, call CHEMTREC at 1-
800-424-9300, International 703-527-3887.
LEGAL DISCLAIMER
Prior to each use of any product of Sika Corpor-
ation, its subsidiaries or affiliates ( SIKA ), the
user must always read and follow the warnings
and instructions on the product s most current
product label, Product Data Sheet and Safety
Data Sheet which are available at usa.sika.com
or by contacting SIKA s Technical Service De-
partment via email at tsmh@us.sika.com.
Nothing contained in any SIKA literature or ma-
terials relieves the user of the obligation to
read and follow the warnings and instructions
for each SIKA product as set forth in the current
product label, Product Data Sheet and Safety
Data Sheet prior to use of the SIKA product.
SIKA warrants this product for one year from
date of installation to be free from manufactur-
ing defects and to meet the technical proper-
ties on the current Product Data Sheet if used
as directed within the product s shelf life. User
determines suitability of product for intended
use and assumes all risks. User s and/or buyer s
sole remedy shall be limited to the purchase
price or replacement of this product exclusive
of any labor costs. NO OTHER WARRANTIES EX-
PRESS OR IMPLIED SHALL APPLY INCLUDING
ANY WARRANTY OF MERCHANTABILITY OR FIT-
NESS FOR A PARTICULAR PURPOSE. SIKA SHALL
NOT BE LIABLE UNDER ANY LEGAL THEORY FOR
SPECIAL OR CONSEQUENTIAL DAMAGES. SIKA
SHALL NOT BE RESPONSIBLE FOR THE USE OF
THIS PRODUCT IN A MANNER TO INFRINGE ON
ANY PATENT OR ANY OTHER INTELLECTUAL
PROPERTY RIGHTS HELD BY OTHERS. Sale of
SIKA products are subject to the Terms and
Conditions of Sale which are available at ht-
tps://usa.sika.com/en/group/SikaCorp/term-
sandconditions.html or by calling +1 800-933-
7452.
PRODUCT DATA SHEET
Sikaflex -291
Version 03.01 (04 – 2023), en_US
012001202914001000
Sika Corporation
30800 Stephenson Highway
Madison Heights, MI 48071
U.S.A.
Telephone: +1 248-577-0020
Email: tsmh@us.sika.com
www.sikausa.com
2 / 2
