... AS568, BS, JIS, metric sizes all available. Description of Excellent Cat O-ring Kit PAHS Approved:1. Materials: can be NR ... FKM, FPM, etc.2. Characteristics: good physical and chemical properties cat o-ring kit. 3. Hardness: 30~90 shore A or ... PFOA, FDA, NSF, KTW, WRAS, LFGB, etc. 8. Applications: automobile cat o-ring kit, electrical appliance, mechanical, industrial, construction, household, medical ...