... standard,ASTM 4.OEM order welcomed Specifications:food grade rubber gasket1.Can easily withstand temperature range of -80 C ... reasonable price and service;About us: We are a professional silicon rubber product manufacturer in China for more than 8 years ... ornaments, shoe material, mobile phone cases, automotive rubber accessories, non-slip map, rubber ketchenware, rubber seals, wrist strap, and so on. ...