... :10000pcs 3,Material: silicone 4,OEM & ODM warmly welcomed Silicone Rubber O Ring:1)High and low temperature resistance,2)abrasion ... resistance, 3)UV-resistance,3)Ozone resistance Silicone Rubber O Ring:1)Material: SILICON, NBR, SBR,NR,EPDM,IIR,EP,CR etc2) Waterproof ... provide OEM service with your own logo!Feature Seal Material NBR, HNBR, NBQ, FKM, CR, PDFE, EPDM, SILICONE. ect. Color Available ...