... BS, JIS, metric sizes all available. Description of Excellent Cat O-ring Kit PAHS Approved:1. Materials: can be NR ... 6. Processing: all manufacturing processes are complied with ISO9001:2008. Please contact us if you need detailed information about ... , NSF, KTW, WRAS, LFGB, etc. 8. Applications: automobile cat o-ring kit, electrical appliance, mechanical, industrial, construction, household, medical ...