... / 2 "- 6"4) Standards: ISO, DIN, SMS, IDF, 3A5) Seal Ring: Silicon rubber, EPDM or FPM6) Application: Pharmacy, beer, food, dairy ... the sanitary stainless steel pipe fittings as follows:Tees, Elbows, Reducers, Cross, Union, Clamps, Sightglass, Cleaning balls and so on. concentric ...