... service 3,Ozone resistance,aging resistance,weather resistance Silicone Rubber Seals Gasket&Ring1, Material:NBR,CR,SBR,HNBR,ACM,EPDM,IIR ... A3, Property:high/low temperature resistance, oil and fuel resistance, water resistance,weathering resistance, Ozone resistance etc.4, Certification:ISO9001:2008 ... or samples.8, OEM or ODM is welcomed Silicone Rubber Seals Gasket&Ring