Gasket - Ring Joint, ANSI Class 150-2500, Ring Dimension (in)
- Dimensions to ASME B16.20 - Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed
- Either an oval or octagonal ring may be used with a octagonal grove.
- An octagonal grove is the standard grove used with ring joint facing.
- Tolerance for A = ± 0.005
- Tolerance for B = ± 0.008
- Tolerance for C = ± 1/64"
- Tolerance for D = ± 1/64"
- Tolerance for 23° = ± 1/2°
- Tolerance for r = ± 1/64"
- r = 1/16" radius for width of ring 7/8" and smaller.
- r = 3/32" radius for width of ring 1" and larger.
- Oval rings are only used with oval groves.
- Oval and octagonal rings can be used with octagonal groves.
Ring Number
|
Pitch Diameter A |
Width of Ring B |
Height of Ring Oval C |
Height of Ring Octagonal D |
Width of Flat E |
---|---|---|---|---|---|
R-11 | 1 11/16 | 1/4 | 7/16 | 3/8 | 0.170 |
R-12 | 1 9/16 | 5/16 | 9/16 | 1/2 | 0.206 |
R-13 | 1 11/16 | 5/16 | 9/16 | 1/2 | 0.206 |
R-14 | 1 3/4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-15 | 1 7/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-16 | 2 | 5/16 | 9/16 | 1/2 | 0.206 |
R-17 | 2 1/4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-18 | 2 3/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-19 | 2 9/16 | 5/16 | 9/16 | 1/2 | 0.206 |
R-20 | 2 11/16 | 5/16 | 9/16 | 1/2 | 0.206 |
R-21 | 2 27/32 | 7/16 | 11/16 | 5/8 | 0.305 |
R-22 | 3 1/4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-23 | 3 1/4 | 7/16 | 11/16 | 5/8 | 0.305 |
R-24 | 3 3/4 | 7/16 | 11/16 | 5/8 | 0.305 |
R-25 | 4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-26 | 4 | 7/16 | 11/16 | 5/8 | 0.305 |
R-27 | 4 1/4 | 7/16 | 11/16 | 5/8 | 0.305 |
R-28 | 4 3/8 | 1/2 | 3/4 | 11/16 | 0.341 |
R-29 | 4 1/2 | 5/16 | 9/16 | 1/2 | 0.206 |
R-30 | 4 5/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-31 | 4 7/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-32 | 5 | 1/2 | 3/4 | 11/16 | 0.341 |
R-33 | 5 3/16 | 5/16 | 9/16 | 1/2 | 0.206 |
R-34 | 5 3/16 | 7/16 | 11/16 | 5/8 | 0.305 |
R-35 | 5 3/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-36 | 5 7/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-37 | 5 7/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-38 | 6 3/16 | 5/8 | 7/8 | 13/16 | 0.413 |
R-39 | 6 3/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-40 | 6 3/4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-41 | 7 1/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-42 | 7 1/2 | 3/4 | 1 | 15/16 | 0.485 |
R-43 | 7 5/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-44 | 7 5/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-45 | 8 5/16 | 7/16 | 11/16 | 5/8 | 0.305 |
Ring Number
|
Pitch Diameter A |
Width of Ring B |
Height of Ring Oval C |
Height of Ring Octagonal D |
Width of Flat E |
---|---|---|---|---|---|
R-46 | 8 5/16 | 1/2 | 3/4 | 11/16 | 0.341 |
R-47 | 9 | 3/4 | 1 | 15/16 | 0.485 |
R-48 | 9 3/4 | 5/16 | 9/16 | 1/2 | 0.206 |
R-49 | 10 5/8 | 7/16 | 11/16 | 5/8 | 0.305 |
R-50 | 10 5/8 | 5/8 | 7/8 | 13/16 | 0.413 |
R-51 | 11 | 7/8 | 1 1/8 | 1 1/16 | 0.583 |
R-52 | 12 | 5/16 | 9/16 | 1/2 | 0.206 |
R-53 | 12 3/4 | 7/16 | 11/16 | 5/8 | 0.305 |
R-54 | 12 3/4 | 5/8 | 7/8 | 13/16 | 0.413 |
R-55 | 13 1/2 | 1 1/8 | 1 7/16 | 1 3/8 | 0.780 |
R-56 | 15 | 5/16 | 9/16 | 1/2 | 0.206 |
R-57 | 15 | 7/16 | 11/16 | 5/8 | 0.305 |
R-58 | 15 | 7/8 | 1 1/8 | 1 1/16 | 0.583 |
R-59 | 15 5/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-60 | 16 | 1 1/4 | 1 9/16 | 1 1/2 | 0.879 |
R-61 | 16 1/2 | 7/16 | 11/16 | 5/8 | 0.305 |
R-62 | 16 1/2 | 5/8 | 7/8 | 13/16 | 0.413 |
R-63 | 16 1/2 | 1 | 1 5/16 | 1 1/4 | 0.681 |
R-64 | 17 7/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-65 | 18 1/2 | 7/16 | 11/16 | 5/8 | 0.305 |
R-66 | 18 1/2 | 5/8 | 7/8 | 13/16 | 0.413 |
R-67 | 18 1/2 | 1 1/8 | 1 7/16 | 1 3/8 | 0.780 |
R-68 | 20 3/8 | 5/16 | 9/16 | 1/2 | 0.206 |
R-69 | 21 | 7/16 | 11/16 | 5/8 | 0.305 |
R-70 | 21 | 3/4 | 1 | 15/16 | 0.485 |
R-71 | 21 | 1 1/8 | 1 7/16 | 1 3/8 | 0.780 |
R-72 | 22 | 5/16 | 9/16 | 1/2 | 0.206 |
R-73 | 23 | 1/2 | 3/4 | 11/16 | 0.341 |
R-74 | 23 | 3/4 | 1 | 15/16 | 0.485 |
R-75 | 23 | 1 1/4 | 1 9/16 | 1 1/2 | 0.879 |
R-76 | 26 1/2 | 5/16 | 9/16 | 1/2 | 0.206 |
R-77 | 27 1/4 | 5/8 | 7/8 | 13/16 | 0.413 |
R-78 | 27 1/4 | 1 | 1 5/16 | 1 1/4 | 0.681 |
R-79 | 27 1/4 | 1 3/8 | 1 3/4 | 1 5/8 | 0.977 |
R-80 | 24 1/4 | 5/16 | - | 1/2 | 0.206 |