Standards: DIN11851：Hygienic Union, Stainless steel fittings for the food and chemical industry – Hygienic screw pipe connections for expanding and welding DIN11864-1：Aseptic Union, fittings made of stainless steel for the aseptic, chemical and pharmaceutical industry – Aseptic screw connections, standard type Product Description & Applications: The sanitary union coupling according to DIN 11851 and DIN11864 is mostly applied to pipe connections in food industry, chemical industry and pharmaceutical industry, as well as other hygienic industries. It is very easy to install and fast to disassemble. Part List: The complete union coupling set consists of：Nut, Male (Male part), Liner ( Taper part ), Gasket ( Seal Ring ). Each of them are in different types.

1. Male type: long male, short male, expanded male, blind male ( blank male )
2. Seal: o-ring, ring with lip, ring with collar
3. Liner type: long liner, expanded liner, blind liner ( blank liner )
4. Nut: round nut, hexagon nut, blind nut ( blank nut ), blind nut with chain

Material: Nut: Stainless Steel 304 Male: Stainless Steel 304 or 316L (W.St. 1.4401) Liner: Stainless steel 304 or 316L (W.St. 1..4404) Seal ring: NBR  -25° to +110° C EPDM  -40° to +130° C FPM (Viton)  -15° to +220° C Silicone (MVQ)  -40° to +130° C