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Significance and Use
4.1 This classification is intended to encourage uniformity in reporting properties; to provide a common language for communications between producers and users; to guide engineers and designers in the use, construction, and properties of commercially available materials; and to be versatile enough to cover new materials and test methods as they are introduced.
1.1 This classification covers a means for specifying or describing pertinent properties of commercial laminate composite gasket materials (LCGM). These structures are composed of two or more chemically different layers of material. These materials may be organic or inorganic, or combinations with various binders or impregnants. Gasket coatings are not covered since details thereof are intended to be given on engineering drawings, or as separate specifications. Commercial materials designated as enveloped gaskets are excluded from this classification; they are covered in Practice . This classification system does not cover multilayer steel (MLS) gaskets currently used for some automotive exhaust and head gaskets. MLS gaskets are classified under Classification .
1.2 Since all of the properties that contribute to gasket performance are not included, use of this classification as a basis for selecting LCGM is limited.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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.
1.5 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A109/A109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
D2000 Classification System for Rubber Products in Automotive Applications
F104 Classification System for Nonmetallic Gasket Materials
F146 Test Methods for Fluid Resistance of Gasket Materials
F336 Practice for Design and Construction of Nonmetallic Enveloped Gaskets for Corrosive Service
F433 Practice for Evaluating Thermal Conductivity of Gasket Materials
F1276 Test Method for Creep Relaxation of Laminated Composite Gasket Materials
ICS Number Code 21.140 (Seals, glands)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM F868-17, Standard Classification for Laminated Composite Gasket Materials, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top