silicone O ring 1.Durable in liquid material, mineral oil,lubricant etc 2. High flexibility 3.Resistant to sunlight, ozone silicone O ring1.Material :Made of NBR ,Silicone ,FKM ,EPDM ,PTFE etc.2. Application :Widely used in Automobile,Engine ,the Gear Box ,the Vehicle and Sedan Chairs ,the Seering system,the Wheel hub and so on .3. We are leading manufacture focus on on profeeional O,U,Y rubber ...