1. Viton o ring Quick supply 2. Different colors and sizes 3. Good quality, ... Series, ISO 361/1and Customized specificationCertificationISO9001-2008, TS16949, NSF, WRAS, UL, TZW, W270, ACS, FDAMaterial100% pure silicone o-ringMaterial usage is ... , 46*34*34 cmNot-standard packing: follow customers' requirement o ring