Unit Size Net Weight Quart Kit 3 lb Gallon Kit 24 lb Five Gallon Kit 120 lb PMC744 Polyurethane rubber has been used for years by mold making professionals to cast plaster, concrete, resins, etc. It is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail reproduction.PMC744 is ideal for making ceramic case molds and plaster block molds, reproducing ornamental plaster,making molds for casting concrete, casting a variety of Smooth-On urethane resins, casting wax for making candles and making a mechanical rubber parts.PropertiesTechnical Properties Mix Ratio by Weight 2A:1B Mix Ratio by Volume 2A:1B Pot Life 15 minutes Cure Time 16 hours Color Beige Shore Hardness 44A Mixed Viscosity 3,400 cps Shrinkage < .001in./in. Specific Volume 27.5 cu. in./lb Specific Gravity 1.01g/cc Tensile Strength 300 psi 100% Modulus 90 psi Elongation @ Break 400% Die C Tear Strength 90 pli Media VideoDocumentation Technical Bulletin Special Order Items PRODUCT ADVISORY: The products listed below are currently SPECIAL ORDER items and require pre order. Lead times may vary - For more information please contact our staff.700580 - PMC 744 - Five Gallon Kit Related ProductsRELATED PRODUCTS: