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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. Gaskets shall be manufactured from an ozone-resistant compound and shall not be dependent for ozone resistance on surface protection which can be removed by abrasion, detergents, or other means. The tensile strength test and elongation test shall be performed to meet the requirements prescribed. Tear resistance test, hardness test, compression test, brittleness temperature test, ozone resistance test, heat aging effect test, flame propagation test, and lip pressure test shall be performed to meet the requirements prescribed.
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.
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 1—The 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 2—Structural 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 SI units are to be regarded as the standard.
1.4 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.
1.5 The following precautionary caveat pertains only to the test method portion, Section 7, 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.
1.6 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.
C1166 Test Method for Flame Propagation of Dense and Cellular Elastomeric Gaskets and Accessories
D15 Method of Compound and Sample Preparation for Physical Testing of Rubber Products
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
D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment
D2240 Test Method for Rubber Property--Durometer Hardness
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code 31400000(Gaskets); 53141503(Zippers)
ASTM C542-05(2011), Standard Specification for Lock-Strip Gaskets, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top