Ring Type Joint
Ring Type Joint
Oval Ring type joint gaskets are made according in : API-6A, ASME/ANSI B16.5, MSS SP44 (ASME B16.47 SERIES A) & BS 1560.
Oval Ring Joint 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 23° — +/- 0.5°
Oval ring joint gaskets can be made in Carbon Steel, Soft Iron, F5, SS304, SS316, SS347, Inconel 625, etc
Please find the dimensions chart of Oval ring joint gaskets in the following:
| PRESSURE CLASSES | |||||||||||||
| ASME B16.5 | API 6B | ASME B16.47 Series A | |||||||||||
| 150# | 300# �?600# | 900# | 1500# | 2500# | 720# – 960# (1) | 2000# | 3000# | 5000# | 10000# | 150# | 300# – 600# | 900# | |
| ½” | – | R-11 | R-12 | R-12 | R-13 | – | – | – | – | – | – | – | – |
| ¾” | – | R-13 | R-14 | R-14 | R-16 | – | – | – | – | – | – | – | – |
| 1″ | R-15 | R-16 | R-16 | R-16 | R-18 | R-16 | R-16 | R-16 | R-16 | R-82 | – | – | – |
| 1 ¼” | R-17 | R-18 | R-18 | R-18 | R-21 | R-18 | R-18 | R-18 | R-18 | – | – | – | – |
| 1 ½” | R-19 | R-20 | R-20 | R-20 | R-23 | R-20 | R-20 | R-20 | R-20 | R-84 | – | – | – |
| 2″ | R-22 | R-23 | R-24 | R-24 | R-26 | R-23 | R-23 | R-23 | R-24 | R-85 | – | – | – |
| 2 ½” | R-25 | R-26 | R-27 | R-27 | R-28 | R-26 | R-26 | R-26 | R-27 | R-86 | – | – | – |
| 3″ | R-29 | R-31 | R-31 | R-35 | R-32 | R-31 | R-31 | R-31 | R-35 | R-87 | – | – | – |
| 3 ½” | R-33 | R-34 | – | – | – | – | – | – | R-37 | R-89 | – | – | – |
| 4″ | R-36 | R-37 | R-37 | R-39 | R-38 | R-37 | R-37 | R-37 | R-39 | R-88 | – | – | – |
| 5″ | R-40 | R-41 | R-41 | R-44 | R-42 | R-41 | R-41 | R-41 | R-44 | R-90 | – | – | – |
| 6″ | R-43 | R-45 | R-45 | R-46 | R-47 | R-45 | R-45 | R-45 | R-46 | – | – | – | – |
| 8″ | R-48 | R-49 | R-49 | R-50 | R-51 | R-49 | R-49 | R-49 | R-50 | – | – | – | – |
| 10″ | R-52 | R-53 | R-53 | R-54 | R-55 | R-53 | R-53 | R-53 | R-54 | R-91 | – | – | – |
| 12″ | R-56 | R-57 | R-57 | R-58 | R-60 | R-57 | R-57 | R-57 | – | – | – | R-57 | R-57 |
| 14″ | R-59 | R-61 | R-62 | R-63 | – | R-61 | R-61 | R-61 | – | – | – | R-61 | R-62 |
| 16″ | R-64 | R-65 | R-66 | R-67 | – | R-65 | R-65 | R-65 | – | – | – | R-65 | R-66 |
| 18″ | R-68 | R-69 | R-70 | R-71 | – | R-69 | R-69 | R-69 | – | – | – | R-69 | R-70 |
| 20″ | R-72 | R-73 | R-74 | R-75 | – | R-73 | R-73 | R-73 | – | – | – | R-73 | R-74 |
| 22″ | – | – | – | – | – | – | – | – | – | – | R-80 | R-81 | – |
| 24″ | R-76 | R-77 | R-78 | R-79 | – | – | – | – | – | – | – | R-77 | R-78 |
| 26″ | – | – | – | – | – | – | – | – | – | – | – | R-93 | R-100 |
| 28″ | – | – | – | – | – | – | – | – | – | – | – | R-94 | R-101 |
| 30″ | – | – | – | – | – | – | – | – | – | – | – | R-95 | R-102 |
| 32″ | – | – | – | – | – | – | – | – | – | – | – | R-96 | R-103 |
| 34″ | – | – | – | – | – | – | – | – | – | – | – | R-97 | R-104 |
| 36″ | – | – | – | – | – | – | – | – | – | – | – | R-98 | R-105 |
| Notes: (1) – Class 720, 960, 10000 and 2900 flanges to API 6B are obselete. Data is for informational purposes only. (2) – R-30 is for lapped joint only. | |||||||||||||