Insulated Closed Cell Tube / Sponge Rubber Packing For Support Of Refrigerant Pipe Line Of Ac Coaches. Inner Diameter Of Item (C): 15.88 Mm (5/8 ) And Item (D): 22.23 Mm (7/8 ) As Per Drawing, Length: Two Meters Each Size In Set, With Uniform Wall Thickness Of 10 Mm, As Per Dy.Cee/Work Shop/Ajmer S Drawing No. Rac/1/12. The Rubber Material Should Be Conform To Is: 1160/1984.