Polytek Poly 74-30 Clear 2 Gallon Kit (16lb)

Availability: In stock (3)

Poly 74-30 Clear is a transparent version of Poly 74-30 that is useful for molds that need to be cut after cure or where transparency is important. It is also useful for molds where clarity is needed to see casting material fill the cavity. This liquid polyurethane rubber can also be used for casting clear amber or color-cast flexible art objects and décor.

Poly 74-30 Clear 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). It is widely used by foundries for wax.

This liquid rubber can be poured as supplied or brushed-on by mixing in Poly Fiber II thickener orFumed Silica. This rubber is an excellent multi-purpose, economical mold material that will provide long mold life, durability and consistent performance under repeated casting.


Mix Ratio  Shore Hardness      Pour Time        Cured Color                   Mixed Viscosity          Specific Volume   Demold Time

1A:1B               A30                      25-30 min.   Transparent Amber/Varies          2,000 cP                 27.5 in³/lb              ~16 hr.


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