ELASTOSIL® M 4644 A/B

ELASTOSIL® M 4644 A/B by Wacker is a pourable, good flow, addition curing silicone rubber. Possesses medium hardness, good transparency and high tear strength. Provides outstanding resistance to casting resins, particularly polyurethanes and epoxies, for very long service life of the molds. Suitable for reproducing models with undercuts in polyurethane or epoxy resins. Offers fast & non-shrink cure at room temperature and outstanding resistance to common casting resin. ELASTOSIL® M 4644 A/B is designed for vacuum casting for rapid prototyping.