... Ring Assortment 279pcs O-Ring Assortment1. Materials: NBR,also can be NR, HNBR, MVQ, ACM, FLS, CR, ... request, tolerance is ± 5 shore A, and can be ±3 shore A for special products.4. Size tolerance ... with ISO9001:2008 and TS16949. 7. Material approved: Can meet RoHS, REACH,PAHS, PFOS,PFOA, FDA, NSF ... , KTW, WRAS, LFGB, etc.8. Documents: can provide full set of documents, including PPAP, control plan ...