ASTM C542-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C542 – 05
Standard Specification for
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Lock-Strip Gaskets
This standard is issued under the fixed designation C542; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification defines the required properties of
lock-strip gaskets where resistance to sunlight, weathering, C1166 Test Method for Flame Propagation of Dense and
flame, oxidation, permanent deformation under load, and Cellular Elastomeric Gaskets and Accessories
diminution of gripping pressure are prime essentials. D15 Method of Compound and Sample Preparation for
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Physical Testing of Rubber Products
NOTE 1—The requirement of flame propagation may be waived by the
D395 Test Methods for Rubber Property—Compression Set
architect or professional engineer when doing so does not conflict with
D412 Test Methods for Vulcanized Rubber and Thermo-
local codes or ordinances.
plastic Elastomers—Tension
1.2 This specification applies only to the “locking” com-
D573 Test Method for Rubber—Deterioration in an Air
pression type of gasket, sometimes referred to as the “zipper”
Oven
type.
D624 Test Method for Tear Strength of Conventional Vul-
NOTE 2—Structural integrity and weather-tightness of the wall requires
canized Rubber and Thermoplastic Elastomers
the sound design and installation of the entire system of which the gasket
D746 Test Method for Brittleness Temperature of Plastics
is only one component.
and Elastomers by Impact
1.3 The values stated in SI units are to be regarded as the D1149 Test Methods for Rubber Deterioration—Cracking
standard.
in an Ozone Controlled Environment
1.4 Test Method C1166, as referenced in this specification, D2240 Test Method for Rubber Property—Durometer
should be used to measure and describe the properties of
Hardness
materials, products, or assemblies in response to heat and 2.2 Other Standard:
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flame under controlled laboratory conditions and should not be
Rubber Handbook, Specifications for Rubber Products
used to describe or appraise the fire hazard or fire risk of
3. Materials and Manufacture
materials, products, or assemblies under actual fire conditions.
However, results of this test may be used as elements of a fire 3.1 All materials and workmanship shall be in accordance
risk assessment which takes into account all of the factors with good commercial practice.
which are pertinent to an assessment of the fire hazard of a 3.2 Gaskets shall be manufactured from an ozone-resistant
particular end use. compound and shall not be dependent for ozone resistance on
1.5 The following precautionary caveat pertains only to the surface protection which can be removed by abrasion, deter-
test method portion, Section 7, of this specification: This gents, or other means.
standard does not purport to address the safety concerns, if 3.3 Gaskets shall be free of porosity, surface defects, and
any, associated with its use. It is the responsibility of the user dimensional irregularities, particularly in the sealing area.
of this standard to establish appropriate safety and health 3.4 Unless otherwise specified, the material shall be black.
practices and determine the applicability of regulatory limita- 3.5 Lubricantsusedininstallation,shallbeasrecommended
tions prior to use. by the gasket manufacturer.
1.6 Thecommitteewithjurisdictionoverthisstandardisnot
aware of any comparable standards published by other orga-
nizations.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This specification is under the jurisdiction of ASTM Committee C24 on Standards volume information, refer to the standard’s Document Summary page on
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.73 the ASTM website.
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on Compression Seal and Lock Strip Gaskets. Withdrawn. The last approved version of this historical standard is referenced
Current edition approved May 1, 2005. Published June 2005. Originally on www.astm.org.
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approved in 1965 as C542 – 65 T. Last previous edition approved in 2005 as Available from Rubber Manufacturers Association, 444 Madison Ave., New
C542 – 94(2005). DOI: 10.1520/C0542-05. York, NY.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C542 – 05
TABLE 2 Cross-Sectional Tolerances Lock-Strip Gaskets
4. Physical Properties
A
RMA
...