ASTM C864-05(2011)
(Specification)Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers
Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers
ABSTRACT
This specification covers preformed dense elastomeric compression gaskets and accessories for use in sealing and glazing applications. These materials are generally used to seal or serve as components of compression sealing systems between mechanically restrained surfaces in building constructions. The elastomeric materials shall be manufactured from a high-quality ozone-resistant compound that, when properly cured, will comply to the requirements specified. The cured compound shall be suitable for use where resistance to sunlight, weathering, oxidation, and permanent deformation under load are of prime importance. The preformed gaskets or shapes shall be free of porosity, surface defects, and dimensional irregularities that may affect serviceability. The specimens shall be subjected to the following test methods: hardness test, compression set test, ozone resistance test, tensile strength test, elongation test, heat aging test, tear strength test, brittleness temperature test, non-staining test, and flame propagation test.
SIGNIFICANCE AND USE
Flame Propagation:
This specification has two options:
Option I—Flame propagation test is required.
Option II—Flame propagation test is not required.
In case no option is specified, Option I will apply.
SCOPE
1.1 This specification covers preformed dense elastomeric compression gaskets and accessories for use in sealing and glazing applications. These materials are generally used to seal or serve as components of compression sealing systems between mechanically restrained surfaces in building constructions.
1.2 Test Method C1166, 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.
1.3 The following precautionary statement pertains only to the test method portion, Section 9, of this specification: This standard does not purport to address all of 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.
1.4 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:C864 −05(Reapproved 2011)
Standard Specification for
Dense Elastomeric Compression Seal Gaskets, Setting
Blocks, and Spacers
This standard is issued under the fixed designation C864; 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 U.S. Department of Defense.
1. Scope C1166 Test Method for Flame Propagation of Dense and
Cellular Elastomeric Gaskets and Accessories
1.1 This specification covers preformed dense elastomeric
D395 Test Methods for Rubber Property—Compression Set
compression gaskets and accessories for use in sealing and
D412 Test Methods forVulcanized Rubber andThermoplas-
glazing applications.These materials are generally used to seal
tic Elastomers—Tension
or serve as components of compression sealing systems be-
D573 Test Method for Rubber—Deterioration in an Air
tween mechanically restrained surfaces in building construc-
Oven
tions.
D624 Test Method for Tear Strength of Conventional Vul-
1.2 Test Method C1166, as referenced in this specification,
canized Rubber and Thermoplastic Elastomers
should be used to measure and describe the properties of
D746 Test Method for Brittleness Temperature of Plastics
materials, products, or assemblies in response to heat and
and Elastomers by Impact
flame under controlled laboratory conditions and should not be
D925 Test Methods for Rubber Property—Staining of Sur-
used to describe or appraise the fire hazard or fire risk of
faces (Contact, Migration, and Diffusion)
materials, products, or assemblies under actual fire conditions.
D1149 Test Methods for Rubber Deterioration—Cracking in
However, results of this test may be used as elements of a fire
an Ozone Controlled Environment
risk assessment which takes into account all of the factors
D1566 Terminology Relating to Rubber
which are pertinent to an assessment of the fire hazard of a
D2240 Test Method for Rubber Property—Durometer Hard-
particular end use.
ness
1.3 The following precautionary statement pertains only to
D3182 PracticeforRubber—Materials,Equipment,andPro-
the test method portion, Section 9, of this specification: This
cedures for Mixing Standard Compounds and Preparing
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user Standard Vulcanized Sheets
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
3. Terminology
tions prior to use.
3.1 Definitions:
1.4 Thecommitteewithjurisdictionoverthisstandardisnot
3.1.1 Forthedefinitionofelastomer,andotherdefinitionsof
aware of any comparable standards published by other orga-
terms used in this specification, see Terminology C717.
nizations.
4. Materials and Manufacture
2. Referenced Documents
2.1 ASTM Standards: 4.1 The elastomeric materials shall be manufactured from a
C717 Terminology of Building Seals and Sealants
high-quality ozone-resistant compound that, when properly
cured, will comply with this specification.
4.2 The cured compound shall be suitable for use where
This specification is under the jurisdiction of ASTM Committee C24 on
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.73
resistance to sunlight, weathering, oxidation, and permanent
on Compression Seal and Lock Strip Gaskets.
deformation under load are of prime importance.
Current edition approved June 1, 2011. Published August 2011. Originally
approved in 1977. Last previous edition approved in 2005 as C864 – 05. DOI:
4.3 The preformed gaskets or shapes shall be free of
10.1520/C0864-05R11.
2 porosity, surface defects, and dimensional irregularities that
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 may affect serviceability.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 4.4 Unless otherwise specified, the material shall be black.
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C864−05 (2011)
5. Physical Properties specimen (Note 1). Determine the change in hardness after
oven aging for 70 h at 100 6 1°C (212 6 2°F).
5.1 The physical properties of the material shall conform to
the requirements specified in Table 1.
NOTE 1—Hardness readings for the purpose of approximate determi-
nationsmaybetakenfromthedumbbellspecimens,recognizingthatthese
6. Dimensional Tolerances may vary slightly from those taken from the finished material.
6.1 Permissible variations in all cross-sectional dimensions 9.2 CompressionSet—TestMethodsD395,MethodB.Oven
age specimens 22 h at 100 6 1°C (2126 2°F). Where plied
shall be as specified in Table 2 unless otherwise agreed upon
between the purchaser and the supplier. specimens are necessary, the results shall comply with the
requirements of Table 1.
7. Significance and Use
9.3 Ozone Resis
...
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