Active Standard ASTM C864 | Developed by Subcommittee: C24.73
Book of Standards Volume: 04.07
Historical (view previous versions of standard)
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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
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.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C717 Terminology of Building Seals and Sealants
C1166 Test Method for Flame Propagation of Dense and Cellular Elastomeric Gaskets and Accessories
D395 Test Methods for Rubber Property--Compression Set
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D573 Test Method for Rubber--Deterioration in an Air Oven
D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
D746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact
D925 Test Methods for Rubber Property--Staining of Surfaces (Contact, Migration, and Diffusion)
D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment
D1566 Terminology Relating to Rubber
D2240 Test Method for Rubber Property--Durometer Hardness
D3182 Practice for Rubber--Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code 31161816(Spacers or standoffs)