... 1.material:made in high grade silicone rubber material,environmental safe material,non-toxic.2 ... 30 to 80 Shore A DurometerColors: Black, Transparent. Custom colors available.Material Temperature Range: -150F to 550F, ... medical, etcProvide ServiceRubber injection molding, Rubber transfer molding, Rubber compression molding, Rubber to metal molding, Custom rubber moldingColorYellow, Red, Black, White, ...