1) Many kinds of materials and processing methods available: a) EPDM b) NR NameRubber washerMaterialNBR,NR,EPDM,SILICONE,FKM,CR,BR,SBR, ... sample PackagePending QC/ QAThird Parties Featurea) Ozone and Chemical resistance b) Good sealingc) Excellent oil resistance d) Anti-aging, good flexibility ... according to your Requirement2.Designs and Specification are Accepted Rubber product of washers