... )Main material: EPDM NBR FKM CR NR SBR SILICON FKM rubber O- ring Fkm ring Features:1) Materials: different kinds of ... rubber & plastic, such as SILICON,NBR,SBR,NR,CR,EPDM.2) ... ,, industrial parts, household parts, motorcycle parts,electronicsparts, gasket rubber, O-rings.3) Processing methods: compression, injection, transfer, inserting molding, ...