food grade colorful o ring Hardness:Shore40,50,60,70,80,90 Approved:NSF,FDA, ... PFOS commands. Partial meet PAHS,NP requirement.NBR,EPDM,FKM,Silicon rubber etc. are available.Packing Spec.Standard packing:a. plastic ... cmNot-standard packing: follow customers' requirement food grade colorful o ring with high quality approved NSF61,WRAS,UL,FDA,ACS,UL Verified ...