... Approved NSF,WRAS,UL,KTW,W270,ACS,FDA Itemsilicone shower head gaskets with KTW,ACS, W270 approvalDescriptionSilicone shower head gasketShoreA50,60,70Color:Grey,blackApproved ... etc.SizePowerful design capacity supports various customized shower design. CertificationISO9001-2008, NSF, WRAS, UL, TZW, ACS, FDAMaterialAll raw material meet European REACH ...