ASTM F 868 - 17 Standard Classification for Laminated Composite Gasket Materials

Current edition approved May 1, 2017. Published May 2017. Originally approved in 1984. Last previous edition approved in 2009 as F868 – 02 (2009). — 4 p.
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 F336. 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 F2325.
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.