... ,FDA,WRAS, etc. 2. Good quality low price. Description of High Performance Liquid Silicone Rubber :1. Materials: SI,also can be NR ... , good insulation property, anti-toxic, good air-permeable, etc.3. Hardness: 30~90 shore A or IRHD as your request, tolerance ... and assurance systems, have 30 QC technicians and the individual testing room. 11. We have current molds for some of the ...