... , viton 70, viton 90, EPDM, silicone, hnbr, cr, nr Type: 102PCS, 225PCS, 382PCS, 386PCS, 404 O-ring MaterialsNITRILE or BUNA N (NBR) MEDIUM ... chemicals ,including weathering and ozone conditions.Fluorocarbon O-Rings should be considered for seal use in automobile and other mechanical devices requiring ...