Stainless steel 316 octagonal type ring flange gasket

Stainless steel 316 octagonal type ring flange gasket 1. Type: R Description: The R-Type ring gasket can be ordered to two different profiles, oval or octagonal in cross-sections. Both types have identical pitch diameter as the flange groove they correspond to. These gaskets are used in pressures up to 5,000 PSI. The octagonal type has a higher sealing coeffient than the oval, therefore being the better gasket of the two. The oval type is the only gasket that will fit a bottom radiused groove. Flanges with flat bottom v-grooves will accept either style. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.   2. Shape: octagonal, oval  3. Size: R11-R105 4. Material  

Material	Max Hardness(HB)	Max Temperature(°C)
Soft Iron	90	500
Low Carbon Steel	120	540
SS304	160	540
SS304L	160	540
SS316	160	815
SS316L	160	815
SS410	160	850
SS321	160	870
SS347	160	870
Incoloy 825	160	1095
Inconel 600	160	1090
F5	130	650