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Gasket - Ring Joint, ANSI Class 150-2500, Ring Dimension (in)

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  • 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.

data gasket ring jointRing joint gasket

      

Gasket - Ring Joint, ANSI Class 150-2500, Ring Dimension (in)

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

Gasket - Ring Joint, ANSI Class 150-2500, Ring Dimension (in)

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

 

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