Poly 74-30 Clear - Quart Kit (4 Lbs)
Poly 74-30 Clear is a 1A:1B mix, A~30 hardness, polyurethane liquid rubber that cures in 16-24 hours and is designed for making high-performance rubber molds for casting materials such as plaster (millwork, home décor, etc.), wax (candles & lost wax varieties), concrete and resins (polyurethane, polyester, epoxy - with proper release agents).
Poly 74-30 Clear molds can be poured as supplied or brushed-on by mixing in Poly Fiber II thickener or fumed silica.
Poly 74-30 Clear liquid rubber is an excellent multi-purpose, economical mold material that will provide long mold life, durability and consistent performance under repeated casting. This clear version of standard Poly 74-30 is also useful for molds where clarity is needed to see casting material fill the cavity or for casting clear amber or color-cast flexible art objects and décor.
Mask, creature and costume makers: this is your mold material for casting PlatSil Gel 10 Silicone or Gel-00 - will not inhibit the cure! Great Detail.
Mix Ratio: 1A:1B By Weight
Hardness, Shore A: 30
Working Time: 25-30 Minutes
Mixed Viscosity (cP): 2000
This kit contains 1 Quart (2lbs) of Part A and 1 Quart (2lbs) of Part B: 2 Gallons Total.
* Part Bs may darken with age, but cured rubber properties are not affected.
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