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Y Value

The Y value is the minimum seating stress associated with specific gasket materials and relates only to the initial assembly of the joint.

M and Y data is to be used for flange design only as specified in the ASME Boiler and Pressure Vessel Code Division 1, Section VIII, Appendix 2. It is not meant to be used as a gasket seating stress value in actual service. Contact our sales office for information.