279pcs O-Ring Assortment 279pcs O-Ring Assortment1. Materials: NBR,also can be NR, HNBR, MVQ, ACM, ... , control plan and PFMEA. 9. Applications: automobile, electrical appliance, mechanical, industrial, construction, household, medical and other fields. 10. QC/QA: we ... : 1~2 weeks.13. Small order quantity is welcomed. O-Ring Assortment