by | Sep 27, 2025
Technical
Data Sheet
105 System
105/209
Gougeon Brothers, Inc.
P.O. Box 908
Bay City, MI 48707
866-937-8797
westsystem.com
April, 2015
105 Epoxy Resin
/ 209 Extra Slow Hardener
General Description
105/209 Epoxy is used for general coating and bonding applications in extremely warm
and/or humid conditions or when extended working time is desired at room temperature.
Provides approximately twice the working time of 206 Slow Hardener.
105/209 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
105/209 Epoxy can be thickened with W
EST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured. With roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without fish-eyeing. Multiple
coats of 105/209 Epoxy creates a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) ……………. 3 parts resin : 1 part hardener
by weight ……………………………………………………………………………………. 3.68 : 1
Acceptable ratio range by weight ……………………………………………. 3.30 : 1 to 4.03 : 1
Mix viscosity (at 72 F) ASTM D-2393 ……………………………………………………. 650 cps
Pot life (100g at 72 F) ………………………………………………………………… 40-50 minutes
Working time, thin film*…………………………………………………………………. 3 to 4 hours
Cure to a solid, thin film* ……………………………………………………………. 20 to 24 hours
Cure to maximum strength ……………………………………………………………….. 4 to 9 days
Minimum recommended temperature ……………………………………………… 70 F (21 C)
*Epoxy cures faster at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity …………………………………………………………………………………………. 1.16
Hardness (Shore D) ASTM D- 2240 ……………………………………………………………….. 82
Compression yield ASTM D-695 ……………………………………………………….. 12,000 psi
Tensile strength ASTM D-638 ………………………………………………………………7,300 psi
Tensile elongation ASTM D-638 ……………………………………………………………….. 3.6%
Tensile modulus ASTM D-638 ……………………………………………………… 3.98E+05 psi
Flexural strength ASTM D-790 …………………………………………………………. 12,500 psi
Flexural modulus ASTM D-790 …………………………………………………………..3.97E+05
Heat deflection temperature ASTM D-648………………………………………………… 117 F
Onset of Tg by DSC ……………………………………………………………………………….. 122 F
Ultimate Tg …………………………………………………………………………………………… 130 F
Annular shear fatigue @ 100,000 cycles …………………………………………………. 9,900 lb
VOC Content EPA Method 24/ASTM 2369- 93 …………………. 19.3 g/L or 0.16 lb./gal.
Volume percent solids …………………………………………………………………… 96.9% 3%
Storage/Shelf Life
Store at room temperature. Keep containers closed to prevent contamination. With
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering accuracy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105
Resin. Warm resin to 125 F and stir to dissolve crystals.
Hardener may darken with age, but physical properties are not affected by color. Be
aware of a possible color shift if very old and new hardener are used on the same project.
by | Sep 27, 2025
Technical
Data Sheet
105 System
105/209
Gougeon Brothers, Inc.
P.O. Box 908
Bay City, MI 48707
866-937-8797
westsystem.com
April, 2015
105 Epoxy Resin
/ 209 Extra Slow Hardener
General Description
105/209 Epoxy is used for general coating and bonding applications in extremely warm
and/or humid conditions or when extended working time is desired at room temperature.
Provides approximately twice the working time of 206 Slow Hardener.
105/209 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
105/209 Epoxy can be thickened with W
EST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured. With roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without fish-eyeing. Multiple
coats of 105/209 Epoxy creates a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) ……………. 3 parts resin : 1 part hardener
by weight ……………………………………………………………………………………. 3.68 : 1
Acceptable ratio range by weight ……………………………………………. 3.30 : 1 to 4.03 : 1
Mix viscosity (at 72 F) ASTM D-2393 ……………………………………………………. 650 cps
Pot life (100g at 72 F) ………………………………………………………………… 40-50 minutes
Working time, thin film*…………………………………………………………………. 3 to 4 hours
Cure to a solid, thin film* ……………………………………………………………. 20 to 24 hours
Cure to maximum strength ……………………………………………………………….. 4 to 9 days
Minimum recommended temperature ……………………………………………… 70 F (21 C)
*Epoxy cures faster at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity …………………………………………………………………………………………. 1.16
Hardness (Shore D) ASTM D- 2240 ……………………………………………………………….. 82
Compression yield ASTM D-695 ……………………………………………………….. 12,000 psi
Tensile strength ASTM D-638 ………………………………………………………………7,300 psi
Tensile elongation ASTM D-638 ……………………………………………………………….. 3.6%
Tensile modulus ASTM D-638 ……………………………………………………… 3.98E+05 psi
Flexural strength ASTM D-790 …………………………………………………………. 12,500 psi
Flexural modulus ASTM D-790 …………………………………………………………..3.97E+05
Heat deflection temperature ASTM D-648………………………………………………… 117 F
Onset of Tg by DSC ……………………………………………………………………………….. 122 F
Ultimate Tg …………………………………………………………………………………………… 130 F
Annular shear fatigue @ 100,000 cycles …………………………………………………. 9,900 lb
VOC Content EPA Method 24/ASTM 2369- 93 …………………. 19.3 g/L or 0.16 lb./gal.
Volume percent solids …………………………………………………………………… 96.9% 3%
Storage/Shelf Life
Store at room temperature. Keep containers closed to prevent contamination. With
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering accuracy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105
Resin. Warm resin to 125 F and stir to dissolve crystals.
Hardener may darken with age, but physical properties are not affected by color. Be
aware of a possible color shift if very old and new hardener are used on the same project.
by | Sep 27, 2025
Technical
Data Sheet
105 System
105/207
Gougeon Brothers, Inc.
P.O. Box 908
Bay City, MI 48707
866-937-8797
westsystem.com
October, 2014
105 Epoxy Resin
/ 207 Special Clear Hardener
General Description
105/207 Epoxy is used for coating and fiberglass cloth application where an exceptionally
clear, moisture-resistant, natural wood finish is desired. 105/207 is blush free and will not
turn cloudy in humid conditions. Thin film applications roll out and tip off smoothly,
requiring less sanding in preparation for finish coatings.
Three coats or more can be applied in one day without additional surface preparation.
Fewer coats are required to fill fiberglass weave and in most cases the final coating can be
sanded the following day.
105/207 forms a high- strength, moisture-resistant solid with excellent bonding and
barrier coating properties and is used as a structural adhesive for gluing and laminating.
It has excellent compatibility with paints and varnishes. An ultraviolet inhibitor in 207
helps provide a beautiful, long lasting finish when used with quality UV-filtering varnish.
It is formulated without volatile solvents resulting in a very low VOC content. It has a
relatively high flash point, no strong solvent odor and does not shrink after curing.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …………… 3 parts resin : 1 part hardener
by weight …………………………………………………………………………. 3.64 : 1
Acceptable ratio range by weight ………………………………………. 3.41 : 1 to 4.16 :1
Mix viscosity (at 72 F) ASTM D-2393 ……………………………………………… 760cps
Pot life (100g at 72 F)………………………………………………………. 22 to 26 minutes
Working time, thin film* ………………………………………………. 110 to 12 0 minutes
Cure to a solid, thin film* ……………………………………………………. 10 to 15 hours
Cure to working strength ………………………………………………………….1 to 4 days
Minimum recommended temperature…………………………………………..60 F (16 C)
*Epoxy cures faster at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity ……………………………………………………………………………….1.15
Hardness (Shore D) ASTM D-2240 ……………………………………………………..84.4
Compression yield ASTM D-695 ………………………………………………… 11,000 psi
Tensile strength ASTM D638 ……………………………………………………… 6,750 psi
Tensile elongation ASTM D-638 ……………………………………………………….. 3.8%
Tensile modulus ASTM D-638……………………………………………………. 4.40E+05
Flexural strength ASTM D-790 ………………………………………………….. 11,300 psi
Flexural modulus ASTM D-790 …………………………………………………. 4.12E+05
Heat deflection temperature ASTM D-648 ………………………………………….. 117 F
Onset of Tg by DSC ……………………………………………………………………… 116 F
Ultimate Tg ………………………………………………………………………………… 116 F
Storage/Shelf Life
Store at room temperature. Keep containers closed to prevent contamination. With
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering accuracy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105
Resin. Warm resin to 125 F and stir to dissolve crystals.
Hardener may darken with age, but physical properties are not affected by color. If clear
finishing, be aware of a possible color shift if very old and new hardener are used on the
same project.
by | Sep 27, 2025
105 Epoxy Resin’ I 206 Slow Hardener’
‘ea:fuax *mE
ffiata $hest
105 System
1851?S6
Gougeon Brothers, lnc.
P.0. Box 908
Bay City, Ml 48707
866-937-8797
ulestsystem.cont
General Description
1,0512;06 Epoxy is used for general coating and bonding applications when extended
working and cure time are needed or to provide adequate working time at higher
temperatures.
lOS1206 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
t1S1206 Epoxy can be thickened with’WEST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured.
‘With
roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple
coats of 1,051206 Eporry ueate a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC .o.rt.trt. It has a relatively high flash point, no sffong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) ..””””‘.’….5 parts resin : 1 parthardener
,.5.36 : 1,
Acceptable ratio range by weight ..”-.-…’..4.84 : l to 6.19 :1
Mix viscosity (ar72″F) ASTM D-2393 725 cps
by weight
Pot life (1009 at 72″F) ……….. .20 to 25 minutes
‘l7orking
time, thin filmo
Cure to a solid, thin filmo
Cure to working strength
Minimum recommended temperatLlre 60’F (16’C)
“Epory cures faster
at higher temperatures and in thicker applications’
Physical Properties of Cured Epoxy
Specific graviry …–………’…….1’18
Hardness (Shore D) ASTM D-2240 …….”..’.’ 83
Compression yield ASTM D-695 11,500 psi
Tensile strength ASTM D638 7,300 psi
Tensile elongation ASTM D-538 4.50/o
Tensile modulus ASTM D-638 4.50E+05psi
90to 1.10 minutes
,10 to 15 hours
1 to 4 days
Flexural strength ASTM D-790
Flexural modulus ASTM D-790
11,800 psi
4.50E+05
Heat deflection temperature ASTM D-648…”‘…. ……..’J’23″F
Onset of Tg by DSC ‘-…..’..”1’26″F
Ultimate Tg …………. ..””.’..’.139’F
Storage/Shelf Life
Store at room temperafure. Keep containers closed to prevent contamination.
rVith
proper storage, resin and hardeners should remain usable for many years’ After a long
storage, verify the metering accvracy of the pumps. Mix a small test batch to assure
proper curing.
Over rime, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freezelthaw cycles during storage may cause crystallization of 105
Resin.
‘S0arm
resin to 125’F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
0ctober,2014
by | Sep 27, 2025
Technical
Data Sheet
105 System
105/206
Gougeon Brothers, Inc.
P.O. Box 908
Bay City, MI 48707
866-937-8797
westsystem.com
October, 2014
105 Epoxy Resin
/ 206 Slow Hardener
General Description
105/206 Epoxy is used for general coating and bonding applications when extended
working and cure time are needed or to provide adequate working time at higher
temperatures.
105/206 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
105/206 Epoxy can be thickened with WEST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured. With roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self -level without fish-eyeing. Multiple
coats of 105/206 Epoxy create a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …………….. 5 parts resin : 1 part hardener
by weight ……………………………………………………………………………………. 5.36 : 1
Acceptable ratio range by weight …………………………………………….. 4.84 : 1 to 6.19 :1
Mix viscosity (at 72 F) ASTM D-2393 …………………………………………………… 725 cps
Pot life (100g at 72 F) ……………………………………………………………… 20 to 25 minutes
Working time, thin film* ……………………………………………………….. 90 to 110 minutes
Cure to a solid, thin film* ……………………………………………………………. 10 to 15 hours
Cure to working strength …………………………………………………………………. 1 to 4 days
Minimum recommended temperature ………………………………………………. 60 F (16 C)
*Epoxy cures faster at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity ………………………………………………………………………………………… 1.18
Hardness (Shore D) ASTM D- 2240 ……………………………………………………………….. 83
Compression yield ASTM D-695 ……………………………………………………….. 11,500 psi
Tensile strength ASTM D638 ………………………………………………………………7,300 psi
Tensile elongation ASTM D-638 ……………………………………………………………….. 4.5%
Tensile modulus ASTM D-638 ………………………………………………………. 4.60E+05psi
Flexural strength ASTM D-790 ………………………………………………………… 11,800 psi
Flexural modulus ASTM D-790 ………………………………………………………….4.50E+05
Heat deflection temperature ASTM D-648…………………………………………………. 123 F
Onset of Tg by DSC ……………………………………………………………………………….. 126 F
Ultimate Tg …………………………………………………………………………………………… 139 F
Storage/Shelf Life
Store at room temperature. Keep containers closed to prevent contamination. With
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering accuracy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105
Resin. Warm resin to 125 F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
by | Sep 27, 2025
Technical
Data Sheet
105 System
105/206
Gougeon Brothers, Inc.
P.O. Box 908
Bay City, MI 48707
866-937-8797
westsystem.com
October, 2014
105 Epoxy Resin
/ 206 Slow Hardener
General Description
105/206 Epoxy is used for general coating and bonding applications when extended
working and cure time are needed or to provide adequate working time at higher
temperatures.
105/206 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
105/206 Epoxy can be thickened with WEST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured. With roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self -level without fish-eyeing. Multiple
coats of 105/206 Epoxy create a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …………….. 5 parts resin : 1 part hardener
by weight ……………………………………………………………………………………. 5.36 : 1
Acceptable ratio range by weight …………………………………………….. 4.84 : 1 to 6.19 :1
Mix viscosity (at 72 F) ASTM D-2393 …………………………………………………… 725 cps
Pot life (100g at 72 F) ……………………………………………………………… 20 to 25 minutes
Working time, thin film* ……………………………………………………….. 90 to 110 minutes
Cure to a solid, thin film* ……………………………………………………………. 10 to 15 hours
Cure to working strength …………………………………………………………………. 1 to 4 days
Minimum recommended temperature ………………………………………………. 60 F (16 C)
*Epoxy cures faster at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity ………………………………………………………………………………………… 1.18
Hardness (Shore D) ASTM D- 2240 ……………………………………………………………….. 83
Compression yield ASTM D-695 ……………………………………………………….. 11,500 psi
Tensile strength ASTM D638 ………………………………………………………………7,300 psi
Tensile elongation ASTM D-638 ……………………………………………………………….. 4.5%
Tensile modulus ASTM D-638 ………………………………………………………. 4.60E+05psi
Flexural strength ASTM D-790 ………………………………………………………… 11,800 psi
Flexural modulus ASTM D-790 ………………………………………………………….4.50E+05
Heat deflection temperature ASTM D-648…………………………………………………. 123 F
Onset of Tg by DSC ……………………………………………………………………………….. 126 F
Ultimate Tg …………………………………………………………………………………………… 139 F
Storage/Shelf Life
Store at room temperature. Keep containers closed to prevent contamination. With
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering accuracy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105
Resin. Warm resin to 125 F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
by | Sep 27, 2025
105 Epoxy Resin’ I 206 Slow Hardener’
‘ea:fuax *mE
ffiata $hest
105 System
1851?S6
Gougeon Brothers, lnc.
P.0. Box 908
Bay City, Ml 48707
866-937-8797
ulestsystem.cont
General Description
1,0512;06 Epoxy is used for general coating and bonding applications when extended
working and cure time are needed or to provide adequate working time at higher
temperatures.
lOS1206 forms a high-strength, moisture-resistant solid with excellent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials, and a variety of metals.
t1S1206 Epoxy can be thickened with’WEST SYSTEM fillers to bridge gaps and fill voids
and can be sanded and shaped when cured.
‘With
roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple
coats of 1,051206 Eporry ueate a superior moisture barrier and a tough, stable base for
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC .o.rt.trt. It has a relatively high flash point, no sffong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) ..””””‘.’….5 parts resin : 1 parthardener
,.5.36 : 1,
Acceptable ratio range by weight ..”-.-…’..4.84 : l to 6.19 :1
Mix viscosity (ar72″F) ASTM D-2393 725 cps
by weight
Pot life (1009 at 72″F) ……….. .20 to 25 minutes
‘l7orking
time, thin filmo
Cure to a solid, thin filmo
Cure to working strength
Minimum recommended temperatLlre 60’F (16’C)
“Epory cures faster
at higher temperatures and in thicker applications’
Physical Properties of Cured Epoxy
Specific graviry …–………’…….1’18
Hardness (Shore D) ASTM D-2240 …….”..’.’ 83
Compression yield ASTM D-695 11,500 psi
Tensile strength ASTM D638 7,300 psi
Tensile elongation ASTM D-538 4.50/o
Tensile modulus ASTM D-638 4.50E+05psi
90to 1.10 minutes
,10 to 15 hours
1 to 4 days
Flexural strength ASTM D-790
Flexural modulus ASTM D-790
11,800 psi
4.50E+05
Heat deflection temperature ASTM D-648…”‘…. ……..’J’23″F
Onset of Tg by DSC ‘-…..’..”1’26″F
Ultimate Tg …………. ..””.’..’.139’F
Storage/Shelf Life
Store at room temperafure. Keep containers closed to prevent contamination.
rVith
proper storage, resin and hardeners should remain usable for many years’ After a long
storage, verify the metering accvracy of the pumps. Mix a small test batch to assure
proper curing.
Over rime, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freezelthaw cycles during storage may cause crystallization of 105
Resin.
‘S0arm
resin to 125’F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
0ctober,2014
by | Sep 27, 2025
105 Epoxy Resin’ I 205 Fast Hardener’
General Description
1,051205 Epoxy is used for general coating ar-rd bonding applications at lower
remperatures and to produce a rapid cure that develops its physical properties quickly at
room temperature.
1051205 forms a high-strength, moisture-resistant solid with excel lent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials’ and a variety of metals’
10SlZ05 Epoxy can be thickened with’WEST SYSTEM fillers to bridge gaps and fill voids
and can bosanded and shaped when cured.
‘With
roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple
coarsof 1.051205 Epoxycreateasuperiormoisturebarrierandatough,stablebasefor
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …’..”…….’5 parts resin1 part hardener
by weight …..5.19:1
Acceptable ratio range by weight
Mix viscosity (ar.72″F) ASTM D-2393 975 cps
Pot life (1009 at72″F)
‘Working
time, thin filmli
Tensile elongation ASTM D-638
Tensile modulus ASTM D-638 ..
Flexural strength ASTM D-790
Flexural modulus ASTM D-790
… 9 to 12 minutes
. 50 to 70 minutes
Cure to a solid, thin filmo ….. 6 to 8 hours
Cure to working strength 1 to 4 daYs
Minimum recommended temperature ……’.’…… ‘ 40’F (4’C)
“Epory cures faster
at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity
Hardness (Shore D)ASTM D-2240 83
Compression yield ASTM D-695 11,400 psi
Tensile strength ASTM D638
3.4o/o
……… 14,100 psi
Heat deflection temperature ASTM D-648 1 18″F
129’F
Onset of Tg by DSC ………
Ultimate Tg ………….’J.42″F
Storage/Shell Life
Store at room temperature. Keep containers closed to prevent contamination.
‘lrith
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering ac cu racy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freezelthaw cycles during storage may cause crystallization of 105
Resin.
‘Warm
resin to 125’F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
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by | Sep 27, 2025
105 Epoxy Resin’ I 205 Fast Hardener’
General Description
1,051205 Epoxy is used for general coating ar-rd bonding applications at lower
remperatures and to produce a rapid cure that develops its physical properties quickly at
room temperature.
1051205 forms a high-strength, moisture-resistant solid with excel lent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials’ and a variety of metals’
10SlZ05 Epoxy can be thickened with’WEST SYSTEM fillers to bridge gaps and fill voids
and can bosanded and shaped when cured.
‘With
roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple
coarsof 1.051205 Epoxycreateasuperiormoisturebarrierandatough,stablebasefor
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …’..”…….’5 parts resin1 part hardener
by weight …..5.19:1
Acceptable ratio range by weight
Mix viscosity (ar.72″F) ASTM D-2393 975 cps
Pot life (1009 at72″F)
‘Working
time, thin filmli
Tensile elongation ASTM D-638
Tensile modulus ASTM D-638 ..
Flexural strength ASTM D-790
Flexural modulus ASTM D-790
… 9 to 12 minutes
. 50 to 70 minutes
Cure to a solid, thin filmo ….. 6 to 8 hours
Cure to working strength 1 to 4 daYs
Minimum recommended temperature ……’.’…… ‘ 40’F (4’C)
“Epory cures faster
at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity
Hardness (Shore D)ASTM D-2240 83
Compression yield ASTM D-695 11,400 psi
Tensile strength ASTM D638
3.4o/o
……… 14,100 psi
Heat deflection temperature ASTM D-648 1 18″F
129’F
Onset of Tg by DSC ………
Ultimate Tg ………….’J.42″F
Storage/Shell Life
Store at room temperature. Keep containers closed to prevent contamination.
‘lrith
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering ac cu racy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freezelthaw cycles during storage may cause crystallization of 105
Resin.
‘Warm
resin to 125’F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
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Method
Weight
Weight Range
Volume
Volume Range
Hardness
Compression Yield
Tensile Strength
Tensile Modulus
Tensile Elongation
Flexural Strength
Flexural Modulus
Tg DSC Onset 1st Heat
Heat Deflection Temperature
2016 Gougeon Brothers, Inc.
HANDLING PROPERTIES
Technical Data Property Standard Units72 F (22 C)77 F (25 C)85 F (29 C)
150g Pot Life
ASTM D2471minutes
19-24 17-22 12-15
+ 3% SBE-460 5-8 5-8 3-5
Viscosity MixedASTM D2196 cP 1,240 990 720
500g Pot Life
ASTM D2471minutes
19-24 16-21 12-15
+ 3% SBE-460 5-8 5-8 3-5
72 F (22 C)
2.32:1 100:43.1 Cured lb/gal (g/cc)9.68 (1.16)
VIVID BRIGHT
SURFBOARD EPOXY- FAST
MIX RATIO DENSITY
Resin:HardenerResin:Hardener State Units
2.19:1 2.54:1100:45.6 100:39.4Resin lb/gal (g/cc)9.77 (1.17)
COMBINED FEATURES
2.00:1 100:50.0 Hardenerlb/gal (g/cc)8.42 (1.01)
1.89:1 2.19:1100:52.9 100:45.7
MECHANICAL PROPERTIES
Property Standard Units 72 F (22 C) x 2 wk
ASTM D2240 Type D 88
ASTM D695 psi (MPa) 12,500(86)
ASTM D638 psi (MPa)4.91E+05(3.39)
ASTM D638 psi (MPa) 8,390(58)
ASTM D790 psi (MPa)4.56E+05(3.14)
ASTM D638 % 4.5
ASTM D790 psi (MPa) 13,500(93)
THERMAL PROPERTIES
Property Standard Units72 F (22 C) x 2 wk
ASTM E1356 F ( C) 120(49)
1
To prevent water spotting, avoid contact with moisture until epoxy is thoroughly cured and top coated.
2
Store PRO-SET Epoxy resins and hardeners at room temperature in sealed containers until shortly before use. As with many high-
performance epoxy resins, repeated exposure to low temperatures during storage may cause the resin to crystallize. If this occurs,
warm the resin to 125 F and stir to dissolve crystals. Hardeners may form carbamation when exposed to CO
2 and moisture in the
atmosphere for extended periods of time. Prevent carbamation by protecting hardeners from exposure until immediately prior to
processing.
Test specimens were neat epoxy (without fiber reinforcement).
Typical values, not to be construed as specification.
Rev 1 / Dec 2016
ASTM D648 F ( C) 116(47)
Fomulated for high-volume production of
surfboards, SUPs and other boardsport
products requiring an ultra brilliant and clear
finish.
Fast flip times. SBE-262 hardener provides
a flip time of less than one hour at 85 F. Flip
times are significantly reduced by adding
SBE-460 Accelerator at a maximum loading
of 3% by weight.
Easy processing. Optimized for fill coats
and hand wet out of lightweight fiberglass.
Provides an extremely smooth surface when
cured
1
. Excellent sandability. Reaches full
physical properties at room temperature
cure.
Outstanding cosmetics with increased
optical brighteners that enhance whites and
colors to bring out the best in today’s foam
blanks and graphics. Cures ultra brilliant and
clear. Not recommended for clear finish over
wood or dark surfaces.
Shelf life is 3 years for resin and 2 years for
hardener when properly stored
2
.
SBE-262
SBE-163
0 0.5 1 1.5 2 2.5 3 3.5
72
77
85
Flip Time (hours)
Temperature
(
F)
FLIP TIME
3% SBE-460
0% SBE-460
