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.