470 E. BONITA AVE. POMONA, CA 91767
PH (909) 625-0056 WWW.SILPAK.COM FX (909) 625-0082
URETHANE PLASTIC
Product Data Sheet
Urethane casting resins are two-component, low viscosity liquids that polymerize to a hard plastic part in
minutes to hours, depending on thickness. These quality-casting resins are used in art reproductions,
model kits, stage props, prototype pieces, tools, and for duplicating masters. Several different systems that
vary in Gel Time (Work Time), Color, Hardness and Strength are available.
Available Sizes: Qrt kits (4 lbs), Gallon kits (16 lbs), 5Gallon kits (80 lbs), Drum Kits (900 lbs) Drum kits.
*Made for Mass Castings with 1-4 hours Cure, depending on casting thickness; Thin Casting Not Recommended
Fillers and Pigments are available for customizing finish piece.
Urethane plastics should be painted with an oil-base primer and cleaned with a solvent or hot soapy
water solution before a final finish is applied.
Optically Clear Casting Resins with UV stability are available RU-500 Series.
Uncured Urethane Components are sensitive to moisture (Part B) that can cause bubbles and foaming
in casted parts. UV light can discolor cured urethane plastic parts and should be painted for color
stability.
ADDITIVES:
Pigments: Red, Yellow, Blue, Black, Brown, Flesh Tone, White
Translucent Dyes: Red, Yellow, Blue, Black
Specialty Pigment Powders: Glow Dust, Bright Shade Powder/ Green-Violet-Red-Yellow-Orange
Metal Powders: Bronze CB-21, Brass CG-10, Copper CC-11, Iron CI-30, White Metal CS-73
Fillers: Prolite FR 50, Limestone CC-200, Hollow Glass HGF-100, Glass Beads GF-3000,
Thermo-Conductive GAP-25, Marble Powder MP-200, Porcelain PP-300
THE INFORMATION AND DATA CONTAINED HEREIN ARE BASED ON INFORMATION WE BELIEVE RELIABLE. EACH
USER OF THE MATERIAL SHOULD THOROUGHLY TEST ANY APPLICATION AND INDEPENDENTLY CONCLUDE
SATISFACTORY PERFORMANCE BEFORE COMMERCIALIZING. SUGGESTIONS OF USES SHOULD NOT BE TAKEN AS
INDUCEMENTS TO INFRINGE ON ANY PARTICULAR PATENT.
Color Tensile Gel
Time
Viscosity
A/B
Hardness
SILTEC Translucent 2565 3min 50 / 480 55 D
SILWHITE White 2389 3min 150 / 250 65 D
SILTOOL Tan 2050 3min 150 / 250 65 D
SILCAST II White 2560 3min 75 / 100 65 D
SILPLASTIC Tan 2450 5min 125 / 150 65 D
QUICKCAST White 2390 3min 50 / 100 70 D
THERMOCAST II Tan 6100 3min 200 / 250 70 D
FASTKAST 75 White 4990 2min 150 / 225 75 D
HARDCAST Tan 2425 3min 150 / 225 75 D
SLOWCAST* Translucent/White 4190 9min 50 / 400 75 D