PMC-724 Urethane Rubber - PUTS YOU IN CONTROL!
Important: This polyurethane rubber will last and perform in production, often for hundreds of castings (depending on what you are casting into the mold). It also exhibits good physical properties and chemical resistance. But PMC®-724 does not have a long "library life". Molds will soften and revert to a liquid within 2 - 5 years, depending on exposure to moisture. Smooth-On makes many different mold rubbers that offer a very long library life.
- PMC®-724 - Shore 40A hardness