Page 4 - Design Criteria.qxd

® 5
Gasket Selection
Welcome to the Next Generation of Sealing Technology
Select sealing material and metal type (when appropriate) on basis of service, temperature, and nature of medium.
Soft cut gaskets should always be of the minimum thickness consistent with the state of the flanges to be sealed, and
compatible with the medium.
No
No
No Yes
No
Use Soft Cut
Use
SWG,
Flexpro,
MRG,
Weld Ring,
Thermiculite 815,
or ST/RGS3
Critical Service
Use
SWG,
Flexpro, or
Weld Ring
Use
SWG,
Flexpro, or
Weld Ring
No
Critical Service
Yes
Use LS,
SWG,
Flexpro,
MRG, or
Weld Ring
Use
RTJ
Yes
Flange intended
for RTJ type
Yes
RTJ type flange or
> Class 600
Yes
Service > Class 300