... . Quick shipment. 2. 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, Buna, FVMQ ... , NSF, KTW, WRAS, LFGB, etc. 8. Applications: automobile cat o-ring kit, electrical appliance, mechanical, industrial, construction, household, medical and ...