... all available. Description of Aging-proof Flat O-ring with High Quality:1. Materials: can be NR flat o ... KTW, WRAS, LFGB, etc. 8. Applications: automobile flat o-ring, electrical appliance, mechanical, industrial, construction, household, medical and other ... to o ring we also produce outside oil seal, rubber seal, rubber gasket, rubber washer. oil seal rubber gasket rubber seal rubber washer Thank ...