Silicon rubber HY-638 application: Silicon RTV (HY-638 ) is two parts condensation liquid silicone rubber that can be cure under room temperature. silicon rubber mainly used for the manufacturer of products made of unsaturated resin, epoxy resin, polyurethane, etc. Silicon rubber(HY-638) features: HY-638# silicon rubber is mainly with the advantages of good tensile strength, high tear strength, high temperature resistance, high duplication times and repeated use, etc. silicon rubber(HY-638) is the most suitable for small products or fine and precision products which is difficult to demould. This silicon rubber is one of the products with the highest use level in the production of craftwork gifts and the shrinkage less than 0.2% 25KG/DRUM, 200KG/DRUM