ASTM C864-05(2019)
(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
7.1 Flame Propagation:
7.1.1 This specification has two options:
7.1.1.1 Option I—Flame propagation test is required.
7.1.1.2 Option II—Flame propagation test is not required.
7.1.2 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, health, and environmental 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C864 −05 (Reapproved 2019)
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.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers preformed dense elastomeric
C717 Terminology of Building Seals and Sealants
compression gaskets and accessories for use in sealing and
C1166 Test Method for Flame Propagation of Dense and
glazing applications.These materials are generally used to seal
Cellular Elastomeric Gaskets and Accessories
or serve as components of compression sealing systems be-
D395 Test Methods for Rubber Property—Compression Set
tween mechanically restrained surfaces in building construc-
D412 Test Methods forVulcanized Rubber andThermoplas-
tions.
tic Elastomers—Tension
1.2 Test Method C1166, as referenced in this specification,
D573 Test Method for Rubber—Deterioration in an Air
should be used to measure and describe the properties of
Oven
materials, products, or assemblies in response to heat and
D624 Test Method for Tear Strength of Conventional Vul-
flame under controlled laboratory conditions and should not be
canized Rubber and Thermoplastic Elastomers
used to describe or appraise the fire hazard or fire risk of
D746 Test Method for Brittleness Temperature of Plastics
materials, products, or assemblies under actual fire conditions. and Elastomers by Impact
However, results of this test may be used as elements of a fire D925 Test Methods for Rubber Property—Staining of Sur-
faces (Contact, Migration, and Diffusion)
risk assessment which takes into account all of the factors
which are pertinent to an assessment of the fire hazard of a D1149 Test Methods for Rubber Deterioration—Cracking in
an Ozone Controlled Environment
particular end use.
D1566 Terminology Relating to Rubber
1.3 The following precautionary statement pertains only to
D2240 Test Method for Rubber Property—Durometer Hard-
the test method portion, Section 9, of this specification: This
ness
standard does not purport to address all of the safety concerns,
D3182 PracticeforRubber—Materials,Equipment,andPro-
if any, associated with its use. It is the responsibility of the user
cedures for Mixing Standard Compounds and Preparing
of this standard to establish appropriate safety, health, and
Standard Vulcanized Sheets
environmental practices and determine the applicability of
regulatory limitations prior to use.
3. Terminology
1.4 Thecommitteewithjurisdictionoverthisstandardisnot
3.1 Definitions:
aware of any comparable standards published by other orga-
3.1.1 Forthedefinitionofelastomer,andotherdefinitionsof
nizations.
terms used in this specification, see Terminology C717.
1.5 This international standard was developed in accor-
4. Materials and Manufacture
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 The elastomeric materials shall be manufactured from a
Development of International Standards, Guides and Recom- high-quality ozone-resistant compound that, when properly
mendations issued by the World Trade Organization Technical cured, will comply with this specification.
Barriers to Trade (TBT) Committee.
4.2 The cured compound shall be suitable for use where
resistance to sunlight, weathering, oxidation, and permanent
deformation under load are of prime importance.
This specification is under the jurisdiction of ASTM Committee C24 on
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.73
on Compression Seal and Lock Strip Gaskets. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2019. Published May 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approvedin1977.Lastpreviouseditionapprovedin2011asC864 –05(2015).DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0864-05R19. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C864 − 05 (2019)
4.3 The preformed gaskets or shapes shall be free of buffed surface, depending on the size and shape of the
porosity, surface defects, and dimensional irregularities that specimen (Note 1). Determine the change in hardness after
may affect serviceability.
oven aging for 70 h at 100 6 1°C (212 6 2°F).
4.4 Unless otherwise specified, the material shall be black.
NOTE 1—Hardness readings for the purpose of approximate determi-
nationsmaybetakenfromthedumbbellspecimens,recognizingthatthese
5. Physical Properties
may vary slightly from those taken from the finished material.
5.1 The physical properties of the material shall conform to
9.2 CompressionSet—TestMethodsD395,MethodB.Oven
the requirements specified in Table 1.
age specimens 22 h at 100 6 1°C (2126 2°F). Where plied
6. Dimensional Tolerances specimens are necessary, th
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.