1) Sanitary stainless steel DIN union 2) Material: 304, 316, 316L / 1.4401, 1.4301 3) Size: 1", 1.5", 2", 2.5", 3", 4", 6" 4) Seal: EPDM, silicone, Viton Features: RJT union is composed of RJT-13R, RJT-14 welded liner, RJT-15 welded male, and seal. RJT nuts include round nut, hexagonal nut and blank nut. Besides, we have welded type and RJT expanding type. These products are mainly used in dairy industry, wine-making industry, sanitary fitting and machine industry. The quality of products is complying with the FDA standard.