... Resistancesuitable1. Materials: comply to ROHS, Silicone (VMQ), or NBR, EPDM, Viton, etc.2. Temperature: -40~220°C. 3. Hardness: 20 to ... 4. Tolerance: strictly upon international standard, no flash.5. Color: black, transparent, green, red, yellow, grey, purple, pink or as your ... thousands of current molds for all kinds of o ring, AS568, JS, Metric and BS o rings are all available. Heat silicone sealing ...