Precision / durable silicone o ring seal 100% high quality silicone, durable, non-toxic and eco-friendly. Precision / durable silicone o ring seal:1. Material:100% high quality silicone.2. Features:high and low pressure resistance,oil resistance, nontoxic, eco-friendly, safety and healthy.3. Temperature range: -40C to 230C.4. Colors :any pantone color is acceptable.5. Size: can be according to ...