Tough-Cast 65D Black Polyurethane Casting Resin, 1-Gal, Semi-Rigid, Impact, Heat Resistant, Ideal for Prototypes, Reproductions, Rollers, End-Use Parts, Durable Resin for Molds, Crafts, DIY

SPRESIN Tough-Cast 65D Black is a two-part semi-rigid polyurethane casting resin built for professionals, makers, and engineers who need durability and visual appeal in one system. With its sleek black finish and rugged mechanical properties, this formula delivers outstanding impact strength, abrasion resistance, and heat deflection. It’s perfect for making functional prototypes, reproductions, end-use parts, and custom rollers where color and strength matter. Like its original counterpart, this version has a thermoplastic-like feel, similar to ABS, but with the added benefit of a striking black appearance. Whether you're producing prototypes that will be handled, tested, or put to work—or finished pieces ready for consumer use—Tough-Cast 65D Black holds its shape and integrity under stress. This easy-to-use, 1:1 mix ratio resin contains no solvents and cures in just 30 minutes, allowing for fast turnarounds. It performs exceptionally well in RTV silicone molds, creating clean, strong parts with excellent detail reproduction and low shrinkage. Whether you're using it by hand or through automated equipment, it delivers reliable results without hassle. The 2 Pint format is perfect for smaller jobs, quick iterations, or short-run productions where strength and appearance are equally important. When you're crafting something that needs to look finished and last, SPRESIN Tough-Cast 65D Black is your go-to solution.

• Black, Bold, and Durable – Tough-Cast 65D Black delivers the same rugged performance as our original formula, now in a black finish for end-use parts, prototypes, and models that require both strength and sleek presentation.
• Semi-Rigid Performance – This two-part polyurethane resin offers excellent impact and abrasion resistance, with a thermoplastic-like feel. Perfect for rugged reproductions, industrial molds, and functional components.
• Fast and Efficient Use – With a 2-minute working time and 30-minute cure, this black casting resin is perfect for quick production cycles, prototyping, and repeat-use mold work.
• Clean and Solvent-Free – Designed for performance and safety, this resin contains zero solvents, pours easily, and works great with RTV silicone molds. Delivers consistent, bubble-free casts.
• Sized for Mid-Volume Casting – The 1 Gallon version supports repeated mold use and larger runs of black, semi-rigid prototypes or functional resin parts.