... 2. Large stock quantity. 3. Heat-proof o-ring kit. 4. AS568, BS, JIS, metric sizes all ... . Description of Aging-proof O-ring Kit Conform to ROHS:1. Materials: can be NR o- ... ring kit, HNBR, Buna, FVMQ, MVQ, ACM, FLS, CR, ... , WRAS, LFGB, etc. 8. Applications: automobile o-ring kit, electrical appliance, mechanical, industrial, construction, household, medical and ...