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ASTM C864-05(2019)

Current Reaffirmation

Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers

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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.


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.


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.

SDO ASTM: ASTM International
Document Number C864
Publication Date May 1, 2019
Language en - English
Page Count 3
Revision Level 05(2019)
Supercedes
Committee C24.73
Publish Date Document Id Type View
May 1, 2005 C0864-05 Revision
Jan. 10, 1999 C0864-99 Revision
May 1, 2019 C0864-05R19 Reaffirmation
Dec. 1, 2015 C0864-05R15 Reaffirmation
June 1, 2011 C0864-05R11 Reaffirmation
Feb. 1, 2005 C0864-99R05 Reaffirmation