Reprorubber® is an exotic metrology-grade rubber that self-cures in minutes. It creates a virtually perfect replica casting of internal and external forms. Reprorubber® is excellent for checking parts with optical comparators, creating molds for jewelry, metal parts, alloys, ceramics, glass, plastics, wood, marble, paper, cardboard, and more! It is non-toxic, easy to use, never requires a release agent and is 100 times faster than RTV silicons.