DOW® SILASTIC™ RTV-3112 White Silicone Moldmaking Rubber – 453 Gram (16 oz) Jar

SILASTIC RTV-3112 by Dow is a professional-grade two-part silicone moldmaking rubber available in 453 Gram (16 oz) Jar format. It is designed for use on Mold Making, Casting, Prototype Tooling surfaces, delivering long-lasting adhesion, flexibility, and environmental resistance across a wide range of industrial, commercial, and specialized applications. White in color, this product is trusted by maintenance professionals, OEM manufacturers, and engineers worldwide who demand consistent, specification-grade silicone performance in every application.

Technical Information

DOW SILASTIC RTV-3112 is a two-part, condensation-cure silicone moldmaking rubber designed for producing flexible molds for casting polyurethane, epoxy, plaster, and other casting materials. It cures at room temperature to a white, flexible silicone rubber with good tear strength and excellent release properties, enabling multiple casting cycles without mold release agents. The 453 gram jar provides sufficient material for small to medium-sized mold making projects in prototype development, craft production, and industrial tooling applications. SILASTIC RTV moldmaking rubbers are trusted for dimensional accuracy and long mold service life.

Why Choose SILASTIC RTV-3112?

• Two-Part Room Temperature Cure — No heat required — cures at ambient temperature for simple processing
• Excellent Release Properties — Self-releasing from most casting materials without mold release agent
• White Color — Easy to see and inspect cast part details in the finished mold
• Good Tear Strength — Durable mold for multiple casting cycles in production use
• 453 g Jar Format — Right quantity for small to medium prototype and production mold making

Frequently Asked Questions

Q: What is DOW SILASTIC RTV-3112 used for?
A: SILASTIC RTV-3112 is used to make flexible silicone molds for casting polyurethane resins, epoxies, plaster, wax, and low-melt metals in prototype development, craft production, and industrial tooling applications.

Q: What is the MPN for SILASTIC RTV-3112 453 g jar?
A: The Manufacturer Part Number (MPN) is 4107668.

Q: What is the mix ratio for SILASTIC RTV-3112?
A: Consult the current Dow SILASTIC RTV-3112 Technical Data Sheet for the exact base-to-catalyst mix ratio and pot life. Incorrect mixing will result in incomplete or non-uniform cure of the mold rubber.

Q: How many casting cycles can a SILASTIC RTV-3112 mold handle?
A: SILASTIC RTV moldmaking rubbers are designed for multiple casting cycles. The actual number of pulls before mold degradation depends on the casting material, part complexity, and handling conditions.

Q: Does SILASTIC RTV-3112 require a mold release agent?
A: SILASTIC RTV silicone molds are inherently self-releasing from most casting materials. However, a mold release may improve part release and extend mold life when casting aggressive materials such as certain epoxy systems.