Unit Size Net Weight Pint Kit 2 lb Gallon Kit 16 lb Five Gallon Kit 80 lb ReoFlex 30 Dry Polyurethane rubber. ReoFlex urethane rubbers offer superior physical and performance properties for production casting of wax, plasters, and resins. ReoFlex urethanes are available in 20A, 30A, 40A, 50A and 60A Shore hardnesses and feature convenient one-to-one by volume mix ratios. Vacuum degassing is not necessary and ReoFlex rubbers cure with negligible shrinkage to a durable rubber that will last in production. ReoFlex "Wet" rubbers will shrink somewhat over time vs. "Dry" formulations.ReoFlex mold rubbers are used for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. Vibrant colors can be achieved by adding So-Strong Color Tints, available from Smooth-On.PropertiesTechnical Properties Mix Ratio by Weight 1A:1B Mix Ratio by Volume 1A:1B Pot Life 30 minutes Cure Time 16 hours Color Off White Shore Hardness 30A Mixed Viscosity 1,500 cps Shrinkage < .001 in./in. Specific Volume 27.5 cu. in./lb. Specific Gravity 1.01g/cc Tensile Strength 450 psi 100% Modulus 67 psi Elongation @ Break 1,000% Die C Tear Strength 82 pli Media Video Video Documentation Technical Bulletin Related ProductsRELATED PRODUCTS: