The Ring Joint Gasket mainly used in high pressure, temperature applications in the petroleum industry. Mostly used for Valves, Pipes and Flanges. 
Type: BX, RX, R(Oval & Octagonal) 
Materials: Carbon Steel, Soft Iron, SS304, F5, 321, 304L, 316L, 316, 347. Or other materials according to your request. 

R(oval) rtj ring joint gasket is manufactured into oval cross section, it is suit for ANSI B 16.5, ASME B16.47, series flange, can be used in pressures up to 1000 psi. The oval type is the only gasket that will fit a bottom radiused groove, flanges with flat bottom v-grooves also can be accepted 
Spec.: R11~R105