... Quick shipment. 2. Large stock quantity. 3. Heat-proof graphite o-ring. 4. AS568, BS, JIS, metric sizes all available. ... NSF, KTW, WRAS, LFGB, etc. 8. Applications: automobile graphite 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 ...