Stainless steel compression fitting union tee is used to connect two tubes at 90-degree angles to a third tube with the same diameter. Stainless steel compression fitting union tee is made of 316 stainless steel for resistance to scaling and corrosion. Stainless steel compression fitting has a double ferrule construction to reduce the possibility of leakage. Stainless steel compression tube fitting is suitable for use in high-pressure and high-temperature applications. Stainless steel compression tube fitting are compatible with stainless steel, carbon steel, copper, rigid and semi-rigid plastic tube. Accommodate metric tube O.D ranging from 4 mm to 16 mm and inch (imperial) tube O.D from 1/8" to 1/2".