22-5856 / Super Stretch Silicone Rubber

New SuperStretch offers fantastic tear strength that allows mold makers the ability to make standard two-part molds of designs that formerly required complicated multi-piece molds with difficult cores and inserts. The rubber stretches 900% before breaking.

Like all Castaldo silicone jewelry molding rubber compounds, new SuperStretch is easy to pack, easy to cut and requires no silicone mold release sprays.

The shine is fantastic. Waxes come out with a glossy high shine finish, meaning castings will require less finishing. Rubber shrinkage is very low ( only 1.3%). New SuperStretch is compatible with other Castaldo silicone rubber compounds so that it can be used alone or as an insert for special projects.

• Strips measure 2 7/8" X 18"

When liquid rubbers are shipped in cold weather they may become thick and difficult to use. The rubber may remain cold long after it has been placed in a warm room. Due to extreme temperatures rubber products may freeze. The rubber is not defective but needs to  be warmed by a heating pad or some other source of indirect heat. Optimal temperatures for warming the rubber would be between 100 and 150 degrees F or heat that is comfortable to the touch. Heat Cured/vulcanizing rubbers should respond within a few hours.