... Large stock quantity. 3. Heat-proof cat o-ring kit. 4. AS568, BS, JIS, metric sizes all available. Description of Excellent Cat O ... -ring Kit PAHS Approved:1. Materials: can be NR cat o-ring kit, HNBR ... , NSF, KTW, WRAS, LFGB, etc. 8. Applications: automobile cat o-ring kit, electrical appliance, mechanical, industrial, construction, household, medical ...