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Significance and Use
This classification system is intended to encourage uniformity in reporting properties; to provide a common language for communications between suppliers and consumers; to guide engineers and designers in the test methods commonly used for commercially available materials; and to be versatile enough to cover new materials and test methods as they are introduced.
This system is based on the principle that nonmetallic gasket materials can be described in terms of specific physical and mechanical properties. This enables the user, or producer, to characterize a nonmetallic gasket based on properties that are important for the application.
1.1 This classification system provides a means for specifying or describing pertinent properties of commercial nonmetallic gasket materials. Materials composed of asbestos, cork, cellulose, and other organic or inorganic materials in combination with various binders or impregnants are included. Materials normally classified as rubber compounds are not included, since they are covered in Classification D2000. Gasket coatings are not covered, since details thereof are intended to be given on engineering drawings or in separate specifications. Facing materials for laminate composite gasket materials (LCGM) are included in Classification System F104. Assembled LCGMs are covered in Classification F868.
1.2 Since all of the properties that contribute to gasket performance are not included, use of the classification system as a basis for selecting materials 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C561 Test Method for Ash in a Graphite Sample
D1170 Specification for Nonmetallic Gasket Materials for General Automotive and Aeronautical Purposes
D2000 Classification System for Rubber Products in Automotive Applications
D5964 Practice for Rubber IRM 901, IRM 902, and IRM 903 Replacement Oils forASTM No. 1, ASTM No. 2, and ASTM No. 3 Oils
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
F36 Test Method for Compressibility and Recovery of Gasket Materials
F37 Test Methods for Sealability of Gasket Materials
F38 Test Methods for Creep Relaxation of a Gasket Material
F146 Test Methods for Fluid Resistance of Gasket Materials
F147 Test Method for Flexibility of Non-Metallic Gasket Materials
F148 Test Method for Binder Durability of Cork Composition Gasket Materials
F152 Test Methods for Tension Testing of Nonmetallic Gasket Materials
F433 Practice for Evaluating Thermal Conductivity of Gasket Materials
F607 Test Method for Adhesion of Gasket Materials to Metal Surfaces
F868 Classification for Laminated Composite Gasket Materials
F1315 Test Method for Density of a Sheet Gasket Material
G21 Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
ICS Number Code 21.140 (Seals, glands)
UNSPSC Code 31400000(Gaskets)