West System® 105 Epoxy Resin

West System® 105 Epoxy Resin by Gougeon Brothers (SKU: GOU-WS105-55G) provides an ASTM D638 Tensile Strength of 53.8 MPa (7,800 psi), ASTM D648 Heat Deflection Temperature (HDT) of 53.3 °C (128 °F), ASTM D790 Flexural Strength of 78 MPa, and Brookfield viscosity of 975 cPs.

Required companion cure and process materials for West System® 105 Epoxy Resin include: Matched Stoichiometric Amine Hardener (100:28 pbw), Carbon Fiber 3K/12K or E-CR Glass Fabrics, Peel Ply, Flow Media & Vacuum Bagging Film. Category Engineering Rule: STOICHIOMETRIC RATIO CRITICAL: Must be weighed strictly at manufacturer mix ratio (e.g., 100:28 or 100:34 by weight) with matched Amine Hardener. Requires post-cure at 60–80°C for full Tg.

Approved cross-referenced drop-in equivalents for West System® 105 Epoxy Resin in the North American ASTM index include System Three SilverTip® / PRO-SET Laminating Epoxy. Direct head-to-head engineering comparisons are available against System Three SilverTip Marine Laminating Epoxy, PRO-SET LAM-125 Medium Viscosity Laminating Epoxy, WEST SYSTEM 105-B Marine Grade Epoxy Resin.

West System® 105 Epoxy Resin is classified under US DOT 49 CFR and Transport Canada TDG as Non-Regulated Ground / Class 8 Hardener (UN Number: N/A). It ships from regional US hubs in FL, ME, WA, MN, CA with a typical lead time of 1-3 Days. When ordered with Class 5.2 Organic Peroxides (MEKP UN3105), 49 CFR § 177.848 hazmat segregation applies.

West System® 105 Epoxy Resin is qualified for Vacuum Infusion (VARTM), Resin Transfer Molding (RTM), Post-Cure 60–80°C. Primary industrial applications include Industry standard base epoxy for marine construction, filleting & barrier coats, Marine Epoxy.