Unit Size Net Weight Pint Kit 2.8 lb Gallon Kit 20.7 lb Five Gallon Kit 103.5 lb OOMOO products are Special Order items and will require Lead TimesOOMOO 25 Silicone RubberNo Vacuuming Ð No Scale Ð OOMOOª 25 & 30. OOMOOª 25 & 30 are easy to use silicone rubber compounds that feature convenient one-to-one by volume mix ratios (no scale necessary). Both have very low viscosity for easy mixing and pouring, and vacuum degassing is not necessary. Both products cure at room temperature with negligible shrinkage.For The Novice Mold Maker - OOMOO silicones do not have great tear strength. They are good for making simple one or two piece block molds. If you require a high tear strength silicone, Mold Maxª silicones are recommended.OOMOOª 25 & 30 are suitable for a variety of art-related and industrial applications including making molds forsculpture and prototype reproduction, casting plaster, resins and wax.PropertiesTechnical Properties Mix Ratio by Weight 100A:130B Mix Ratio by Volume 1A:1B Pot Life 15 minutes Cure Time 75 minutes Color Light Blue Shore Hardness 25A Mixed Viscosity 4,250 cps Shrinkage 0.0025 in./in. Specific Volume 20.6 cu. in./lb. Specific Gravity 1.34g/cc Useful Temperature (max)< 400¼F Useful Temperature (min)< -65¼F Tensile Strength 240 psi 100% Modulus 100 psi Elongation @ Break 250% Die B Tear Strength 40 pli Documentation 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.798747 - Oomoo 25 - Gallon Kit798748 - Oomoo 25 - Five Gallon Kit Related ProductsRELATED PRODUCTS: Silc Pig Silicone Pigments Ignite Fluorescent Colorants Ease Release 200 Ease Release 205