... ,80,90 black,white,red,green,yellow,blue NSF,FDA,WRAS,TZW,W270,UL AS568,P.G.etc. ItemRubber O-ring ... .G Series, ISO 361/1and Customized specificationCertificationISO9001-2008, TS16949, NSF, WRAS, UL, TZW, ACS, FDAMaterialAll raw material meet European REACH, ROHS ...