Poly 74-29 Liquid Rubber

Polytek Poly 74-29 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a Shore A30 rubber. Make durable, long-lasting molds owing to strength and elongation properties of cured rubber- Pourable liquid rubbers that cure to soft to mid-range hardnesses- Easily thickened for brush-on applications- No release agents needed when casting many plasters, waxes and concretes- Low-viscosity liquid rubbers capture detail from intricate masters Technical Specifications Mix Ratio by Weight: 1A:1B Shore Hardness: A30 Pour Time: 30 min. Demold Time: 16 hr. Cured Color: Black Mixed Viscosity: 2,800 cP Specific Volume: 27.5 in³/lb Specific Gravity: 1.02 Elongation: 1,600 % Tensile Strength: 520 psi Die C Tear Strength: 109 pli Notes: Shake or Stir Part B before use. The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected. For more information, please check the manufacturer website for safety data sheet and material calculator. https://polytek.com/products/poly-74-29-liquid-rubber Brand:Polytek