Ring Type Joint Flange is a method of ensuring leak proof flange connection at high pressures. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. This jointing method can be employed on Weld Neck, Slip-on and Blind Flange.
Specifications:

Ring Type Joint Flange
Size: 1/2" to 60", DN 12mm to DN 1500mm view...
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ
Material:view...
Cabon steel: A105, A350 LF2
Stainless steel: A182 F304/F304L/F316/F316L/F321
Alloy steel: F11, F12
Packing: plywood case and plywood pallet
Standards, Dimensions & Weight
Dimensions of Ring Joint Facings
Ring Joint Facings ASME/ANSI B16.5 & B16.47-1
Ring Joint Facings ASME/ANSI B16.5 & B16.47-2
Ring Joint Facings ASME/ANSI B16.5 & B16.47-3
Ring Joint Facings ASME/ANSI B16.5 & B16.47-4