ASME B16.21 Nonmetallic Flat Gaskets for Pipe Flanges
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ASME B16.21 Document Information:
Title
Nonmetallic Flat Gaskets for Pipe Flanges
ASME International
Publication Date:
May 31, 2005
Scope:
General
This Standard covers types, sizes, materials, dimensions, tolerances,
and markings for nonmetallic
flat gaskets. These gaskets are dimensionally suitable for use with
flanges described in the
referenced flange standards.
Relevant Units
This Standard states values both in metric and U.S. customary units.
As an exception, diameter of
bolts and flange bolt holes are expressed in inch units only. These
systems of units are to be
regarded separately as standard. Within the text, the U.S. customary
units are shown in parentheses
or in separate tables. The values stated in each system are not exact
equivalents; therefore, it is
required that each system of units be used independently of the other.
Except for diameter of bolts
and flange bolt holes, combining values from the two systems
constitutes nonconformance with the
Standard.
Quality Systems
Requirements relating to the product manufacturers' quality system
programs are described in
Nonmandatory Appendix A.
References
Standards and specifications adopted by reference in this Standard are
shown in Mandatory Appendix
II.
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