ASTM C542-94(2005)

Standard Specification for Lock-Strip Gaskets

SCOPE
1.1 This specification defines the required properties of lock-strip gaskets where resistance to sunlight, weathering, flame, oxidation, permanent deformation under load, and diminution of gripping pressure are prime essentials. Note 1The requirement of flame propagation may be waived by the architect or professional engineer when doing so does not conflict with local codes or ordinances.
1.2 This specification applies only to the "locking" compression type of gasket, sometimes referred to as the "zipper" type. Note 2Structural integrity and weather-tightness of the wall requires the sound design and installation of the entire system of which the gasket is only one component.
1.3 The values stated in inch-pound units are to be regarded as the standard.
1.4 Test Method C 1166, as referenced in this specification, should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use
The following precautionary caveat pertains only to the test method portion, Section , of this specification: This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Jan-2005
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.73 - Compression Seal and Lock Strip Gaskets

Relations

• Replaces: ASTM C542-94(1999) - Standard Specification for Lock-Strip Gaskets
• Effective Date: 01-Feb-2005
• Replaced By: ASTM C542-05 - Standard Specification for Lock-Strip Gaskets
• Effective Date: 01-May-2005
• Referred By: ASTM C964-20 - Standard Guide for Lock-Strip Gasket Glazing
• Effective Date: 01-Feb-2005
• Referred By: ASTM C963-00(2021) - Standard Specification for Packaging, Identification, Shipment, and Storage of Lock-Strip Gaskets
• Effective Date: 01-Feb-2005
• Referred By: ASTM C717-19 - Standard Terminology of Building Seals and Sealants
• Effective Date: 01-Feb-2005
• Referred By: ASTM C716-06(2020) - Standard Specification for Installing Lock-Strip Gaskets and Infill Glazing Materials
• Effective Date: 01-Feb-2005

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: C 542 – 94 (Reapproved 2005)
Standard Specification for
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Lock-Strip Gaskets
This standard is issued under the fixed designation C 542; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
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1.1 This specification defines the required properties of 2.1 ASTM Standards:
lock-strip gaskets where resistance to sunlight, weathering, C 717 Terminology of Building Seals and Sealants
flame, oxidation, permanent deformation under load, and C 1166 Test Method for Flame Propagation of Dense and
diminution of gripping pressure are prime essentials. Cellular Elastomeric Gaskets and Accessories
D15 Methods of Compound and Sample Preparation for
NOTE 1—The requirement of flame propagation may be waived by the
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Physical Testing of Rubber Products
architect or professional engineer when doing so does not conflict with
D 395 Test Methods for Rubber Property—Compression
local codes or ordinances.
Set
1.2 This specification applies only to the “locking” com-
D 412 Test Methods for Vulcanized Rubber and Thermo-
pression type of gasket, sometimes referred to as the “zipper”
plastic Rubbers and Thermoplastic Elastomers—Tension
type.
D 573 Test Method for Rubber—Deterioration in an Air
NOTE 2—Structural integrity and weather-tightness of the wall requires
Oven
the sound design and installation of the entire system of which the gasket
D 624 Test Method for Tear Strength of Conventional
is only one component.
Vulcanized Rubber and Thermoplastic Elastomers
1.3 The values stated in inch-pound units are to be regarded D 746 Test Method for Brittleness Temperature of Plastics
as the standard.
and Elastomers by Impact
1.4 Test Method C 1166, as referenced in this specification, D 1149 Test Method for Rubber Deterioration—Surface
should be used to measure and describe the properties of
Ozone Cracking in a Chamber
materials, products, or assemblies in response to heat and
D 1566 Terminology Relating to Rubber
flame under controlled laboratory conditions and should not be D 2240 Test Method for Rubber Property—Durometer
used to describe or appraise the fire hazard or fire risk of
Hardness
materials, products, or assemblies under actual fire conditions. 2.2 Other Standard:
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However, results of this test may be used as elements of a fire
Rubber Handbook, Specifications for Rubber Products
risk assessment which takes into account all of the factors
3. Terminology
which are pertinent to an assessment of the fire hazard of a
particular end use. 3.1 Definitions:
1.5 The following precautionary caveat pertains only to the 3.1.1 For the definition of the term elastomer, and other
test method portion, Section 8, of this specification: This definitions of terms used in this specification, see Terminology
standard does not purport to address the safety concerns, if C 717.
any, associated with its use. It is the responsibility of the user 3.1.2 hardness—the resistance to indentation (Terminology
of this standard to establish appropriate safety and health D 1566).
practices and determine the applicability of regulatory limita- 3.2 Definitions of Terms Specific to This Standard:
tions prior to use.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. 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. Discontinued; see 1975 Annual Book of ASTM Standards, Part 37. Replaced by
Current edition approved Feb. 1, 2005. Published March 2005. Originally Practice D 3182, Test Methods D 3190, and Test Methods D 3192.
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approved in 1965 as C 542 – 65 T. Last previous edition approved in 1999 as Available from Rubber Manufacturers Association, 444 Madison Ave., New
C 542 – 94(1999). York, NY.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C 542 – 94 (2005)
3.2.1 bite—the width by which the flanges of a lock-strip 3.2.14 ladder gasket—a lock-strip gasket in the form of a
gasket overlap the edges of supported or supporting material. subdivided frame having one or more integrally formed inter-
3.2.2 clamping pressure—the pressure exerted by the lip of mediate cross members.
the lock-strip gasket o
...