auto rubber seal ring 1.rubber,silicone seal 2.Nonstandard, custom-made any shape seal 3.Meet SGS,FDS,ROHS,NSF 4.OEM/ODM welcome ... is ok before mass productionAuto spare part rubber seal Features:1. Materials advice: silicone and rubber (EPDM, also NBR, SI, HNBR, SBR, ... and physical property, high/low temperature resistance, oil and fuel, water, weathering and Ozone resistance etc.9. OEM or ODM orders ...