Abstract： ASME B16.21:2021 pdf download.Nonmetallic Flat Gaskets for Pipe Flanges. 2.7 Pressure Class Designation Class, followed by a dimensionless number. is the designation for common flange pressure-temperature ratings as given by the referenced...

ASME B16.21:2021 pdf download.Nonmetallic Flat Gaskets for Pipe Flanges.

2.7 Pressure Class Designation

Class, followed by a dimensionless number. is the designation for common flange pressure-temperature ratings as given by the

referenced flange standards.

3 MATERIALS

3.1 Composition

Gaskets shall be made of resilient or pliable materials. Metal or nonmetal composites may be incorporated as reinforcement or

filler material.

3.2 ServIce Requirements

Selection of a material suitable for a given service application is the responsibility of the user subject to the requirements of

any applicable code or government regulation.

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