... '' 3.Bauer Coupling:Male,Female,sets 4.material of gaskets:EPDM,FKM,Viton 1.Bauer Coupling2.Size:2''-8''3.Type:Male,Female,sets4 ... .material of gaskets:EPDM,FKM,Vitonwe also provide bauer coupling , storz coupling , camlock coupling, gullimin coupling, sandblast coupling , fire coupling , all kinds ...