Dimensions of Non-Metallic Flat Gaskets ASME B16.21 to be used with Raised Face flanges ASME B16.5



 
Class 150 - 400
NPSd1d2
150300400
1/223.844.550.850.8
3/431.85463.563.5
136.563.569.969.9
467379.479.4
52.482.692.192.1
273.2101.6108108
85.9120.6127127
3107.8133.4146.1146.1
4131.8171.5177.8174.7
5152.4193.8212.8209.5
6190.5219.1247.7244.5
8238.3276.3304.8301.7
10285.8336.6358.8355.6
12342.9406.4419.1415.9
14374.7447.7482.6479.5
16425.5511.2536.6533.4
18489546.1593.7590.6
20533.4603.3650.9644.5
24641.4714.4771.6765.3
NPSd1150300400
d2
Class 600 - 2500
NPSd1d2
60090015002500
1/223.850.860.460.466.8
3/431.863.566.766.773.1
136.569.976.276.282.5
4679.485.885.8101.6
52.492.195.395.3114.3
273.2108139.7139.7143
85.9127161.9161.9165.1
3107.8146.1165.1171.5193.8
4131.8190.5203.2206.5231.9
5152.4238.2244.6250.9276.3
6190.5263.6285.8279.4314.5
8238.3317.5355.6349.3384.3
10285.8396.9431.8431.8473.2
12342.9454.1495.3517.6546.1
14374.7489517.6574.7...
16425.5562571.5638.2...
18489609.6635701.8...
20533.4679.5695.5752.5...
24641.4787.4835.1898.6...
NPSd160090015002500
d2
 

 

General notes:

  • Dimensions are in millimeters unless otherwise indicated.
  • Images shows Grooved Gaskets with Covering Layer and Centering Ring.
  • d1 = Inside diameter.
  • d2 = Outside diameter.
  • d3 = Outside diameter of centering ring.
  • Thickness (t) specified by customer.