... service life 4)Accept small orde rubber O-Ring Materials: different kinds of rubber & plastic, such as Silicon, NBR ... , CR, EPDM, and FKMRubber O-Ring Features:1) Materials: different kinds of rubber & plastic, such as SILICON,NBR ... parts, household parts, motorcycle parts,electronicsparts, gasket rubber, O-rings. 3) Processing methods: compression, injection, ... various sizes and color rubber o ring