R series gaskets can be manufactured in accordance with all relevant standards to suit the following flange designations: API-6A, ASME/ANSI B16.5, MSS SP44 (ASME B16.47 SERIES A) & BS 1560.
Oval Ring Joing Gasket available in both oval and octagonal configurations, both types are interchangeable on modern octagonal type grooved flanges.
Tolerance: (mm):
Width of Ring --- +/- 0.20;
Height of Ring --- +/- 0.50;
Pitch Diameter --- +/-0.18;
(Octagonal) Angle of 23o --- +/- 0.5o
Materials: Carbon Steel, Soft Iron, SS304, F5, 321, 304L, 316L, 316, 347. Or other materials according to your request.
| Gasket type | Gasket cross section | Ring joint gasket standard | Flange standard |
| Oval | ASME B 16.20 API 6A | ANSI B 16.5ASME B16.47, series A | |
| Octagonal | ASME B 16.20 API 6A | ANSI B 16.5 ASME B16.47, seriesA | |
| RX | ASME B 16.20 API 6A | API 6 B | |
| BX | API 6A | API 6 BX |
Available material
| Material | Maximum Hardness (BRINELL) | T( ° C) |
| Soft Iron | 90 | 530 |
| Low Carbon Steel | 120 | 530 |
| 4C6% Chrome 1/2% Mol(F5) | 130 | 500 |
| 304 Stainless Steel | 160 | 750 |
| 316 Stainless Stee | 160 | 750 |
| 321 Stainless Stee | 160 | 750 |
| 347 Stainless Steel | 160 | 750 |
| 410 Stainless Steel | 170 | 500 |
| 31254 Stainless Steel | 160 | 650 |
| Monel | 140 | 600 |
| Inconel 825 | 160 | 1000 |
| Inconel625 | 180 | 1100 |