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Urethane Casting Rubber

Urethane Casting Rubber: High-Performance Material for Detailed Prototypes and Parts

When creating high-fidelity prototypes, functional parts, or short-run production items, selecting the right material is paramount. This is where Urethane Casting Resin excels. Our premium Urethane Casting Materials are engineered to deliver exceptional detail reproduction, durability, and a range of physical properties that mimic production-grade plastics and rubbers. To achieve optimal results with these advanced materials, a controlled Urethane Casting Process is essential, often supported by a reliable Urethane Casting Machine for consistent mixing and degassing, ensuring bubble-free casts every time.

Our specific formulation of Urethane Casting Rubber is a two-part, liquid polymer system designed for vacuum casting applications. It is renowned for its high tear strength, excellent abrasion resistance, and the ability to capture extremely fine details from master patterns. This Urethane Casting Rubber exhibits low viscosity for easy pouring and de-airing, along with a controllable pot life and cure time to suit various project scales and complexities. It cures at room temperature to form a solid, resilient rubber that can withstand functional testing and repeated use.

Key Physical Properties of Our Urethane Casting Rubber

High Tear Strength: Resists tearing and propagation of nicks or cuts.
Excellent Abrasion & Impact Resistance: Durable for functional parts and prototypes.
Superior Detail Reproduction: Captures intricate textures and fine features accurately.
Low Viscosity: Ensures easy mixing and de-airing, minimizing bubble entrapment.
Room Temperature Cure: Simplifies the casting process without requiring ovens.
Variable Shore Hardness: Available in a range from soft, flexible grades to semi-rigid formulations.

Detailed Technical Specifications

Property	Test Method	Value / Range
Mixed Viscosity	Brookfield LVF	600 - 900 cPs
Pot Life (100g mass)	ASTM D2471	10 - 15 minutes
Demold Time	-	16 - 24 hours
Shore Hardness	ASTM D2240	Shore A 20 - Shore A 80
Tensile Strength	ASTM D412	450 - 600 psi
Elongation at Break	ASTM D412	350 - 500%
Tear Strength (Die C)	ASTM D624	80 - 120 pli
Specific Gravity	ASTM D792	1.02 - 1.05
Color (as supplied)	Visual	Translucent, White, or Black

Recommended Mixing Ratio and Handling

Component	Ratio by Weight	Ratio by Volume
Part A (Resin)	100	100
Part B (Hardener)	10 - 30	10 - 30

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Urethane Casting Rubber