... as customized 2,MOQ:5000pcs 3,Material: silicone 4,OEM & ODM warmly welcomed Silicone Sealing Ring:1,Performance: FDA grade, oil resistance, ... friction resistance, anti-aging and ozone, high and low temperature ... and auto parts for sealing. 7, Materials: NBR; FKM; Silicone; Viton; EPDM; SBR; NR; HNBR; PA; PU; CR; F ...