Equivalent Gaskets - ASME B16.20 / BS3381
Equivalent Gaskets - ASME B16.20 / BS3381
(OP)
I am working on a Project where it has been stipulated that all spiral wound gaskets are to be manufactured in accordance with B16.20 accept for 25/1500# and 50/1500# which must be BS3381.
I am trying to figure out what the differences between the gaskets are as I have seen gaskets manufactured as B16.20 crossed out and re-stamped as BS3381.
Comparing the standards the only difference I see is in the sealing element I.D. A #1500 B16.20 gasket has the same sealing ring id as a #2500 BS3381 gasket.
Does this mean the two are interchangeable? The B16.20 is equivalent to a #2500 BS3381 gasket due to its larger sealing element area?
Appreciate any help.
I am trying to figure out what the differences between the gaskets are as I have seen gaskets manufactured as B16.20 crossed out and re-stamped as BS3381.
Comparing the standards the only difference I see is in the sealing element I.D. A #1500 B16.20 gasket has the same sealing ring id as a #2500 BS3381 gasket.
Does this mean the two are interchangeable? The B16.20 is equivalent to a #2500 BS3381 gasket due to its larger sealing element area?
Appreciate any help.





RE: Equivalent Gaskets - ASME B16.20 / BS3381
Cheers,
gr2vessels
RE: Equivalent Gaskets - ASME B16.20 / BS3381
How did you come to that conclusion?
2" (DN50/900&1500#) 8" (DN200/1500#)
B16.20 BS 3381 B16.20 BS 3381
Outer locating ring 143 142.9 352.6 352.4
outer gasket seal 85.9 86.1 257.3 263.9
inner gasket seal 58.7 66.3 215.9 225
inner ring 52.3 52.4 196.9 203.2
The outer locating ring dimensions are the same, but the gasket sealing areas are different.
RE: Equivalent Gaskets - ASME B16.20 / BS3381