ASTM F118-97

Definitions of Gaskets

General Information

• Status: Historical
• Publication Date: 09-Sep-1997
• ICS: 01.040.21 - Mechanical systems and components for general use (Vocabularies)
• ICS: 21.140 - Seals, glands
• Technical Committee: F03 - Gaskets
• Drafting Committee: F03.94 - Terminology

Relations

• Replaced By: ASTM F118-04 - Standard Definitions of Terms Relating to Gaskets
• Effective Date: 01-Apr-2004
• Referred By: ASTM F913-02(2021) - Standard Specification for Thermoplastic Elastomeric Seals (Gaskets) for Joining<brk/> Plastic Pipe
• Effective Date: 10-Sep-1997
• Referred By: ASTM D6497/D6497M-02(2021) - Standard Guide for Mechanical Attachment of Geomembrane to Penetrations or Structures
• Effective Date: 10-Sep-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 118 – 97
Standard Definitions of Terms Relating to
1
Gaskets
This standard is issued under the fixed designation F 118; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope (a) One or more plies of a sheet material;
(b) Composites of dissimilar materials; and
1.1 This standard is a compilation of terminology, related
(c) Materials applied as a bead or other form to one or both
definitions, and descriptions of terms used in the gasket
mating faces prior to assembly.
industry. Included terms are those used to define materials,
gasketed joint—the collective total of all members used to
testing technology, and testing results related to gaskets.
effect a gasketed seal between two separate items.
2. Terminology
leak—the passage of matter through interfacial openings or
passageways, or both, in the gasket.
compressibility—in compressibility/recovery testing of gasket
maintenance factor, m—the factor that provides the additional
materials, the difference between the specimen thickness
preload capability in the flange fasteners to maintain sealing
under preload and thickness under total load, divided by the
pressure on a gasket after internal pressure is applied to the
thickness under preload, expressed as a percent.
joint.
creep—a transient stress-strain condition in which the strain
recovery—in compressibility/recovery testing of gasket mate-
increases as the stress remains constant. (This condition is
rials, the difference between the specimen recovered thick-
approached in flat-face gasketing joints in which the bolt
ness and thickness under total load, divided by the difference
undergoes a high elongation relative to any creep that might
between the thickness under preload and thickness under
take place in the gasket.)
total load, expressed as a percent.
creep relaxation—a transient stress-strain condition in which
resiliency—in compressibility/recovery testing of gasket ma-
the strain increases concurrently with the decay of stress.
terials, the difference between the specimen recovered thick-
(This is the most common condition existing in flat-face
ness and thickness under total load, divided by the thickness
gasketing assemblies in which the bolt exhibits a relatively
under total load, expressed as a percent.
large amount of elongation.)
strain—the deformation of a gasket specimen under the action
flange—the rigid members of a gasketed
...