... .Material:AISI304,AISI316,AISI316L 2.Mode number:YAE 3.Shape:Square Sanitary YAE manhole cover1.Material:AISI304,AISI316,AISI316L2.Mode number ... .Sealing material:EPDM,Silicone,NBR10.Handle:Spanner type handle,Hand wheel handle 11.Application:dairy products,beverage,food,beer,pharmacy and ... in seaworthy wooden case,resistance to damage and wet Sanitary square manhole cover YAE