Flanged Pancake


Pancake seals are used when you would like to use different pressure class flanges backing the same diaphragm seal.

Pancake seals can be used with all flange pressure classes of the seal size.

Materials of Construction:

Diaphragms are welded to 316 stainless steel body.

Both carbon steel and 316 stainless steel ANSI flanges are available on the Flanged Pancake seal type.


Diaphragm cavity design allows for vacuum filling while providing support for the diaphragm membrane.

Flushing/Calibration rings are also available on the Flush Flanged seal family.

Best Practice:

Flanged Pancake seals are best suited for use on flanged process connections 2 inch and larger and all pressure classes.

For smaller flanged process connection sizes please refer to the Offline Flanged style seals.