... temperature holding -20 degree to 80 degree 419pcs O-Ring Assortment1. Materials: NBR,also can be NR, HNBR, MVQ, ACM, ... ECO, CSM, VITON, FKM, FPM, etc.2. Characteristics: oil proof, aging resistant, heat resistant, wear resistant, chemical resistant, ... control plan and PFMEA. 9. Applications: automobile, electrical appliance, mechanical, industrial, construction, household, medical and other fields. 10. ...