These specifications and methods of testing apply to cellular-rubber products known as sponge rubbers and expand rubbers@ but do not apply to latex foam rubbers. The base material used in their manufacture may be natural rubber@ synthetic rubber@ or rubberlike materials@ alone or in combination. Ebonite cellular rubbers are not included. Extruded or molded shapes or sizes too small for cutting standard test specimens are difficult to classify or test by these methods and will usually require special testing procedures. In cases of conflict between the provisions of this general specification and those of a detailed specification@ the latter shall be take precedence. References to these methods for testing cellular-rubber products should specifically state the particular test or tests desired.
SAE J18-1979 history
2006SAE J18-2006 Sponge and Expanded Cellular Rubber Products
2002SAE J18-2002 Sponge and Expanded Cellular Rubber Products
2000SAE J18-2000 Sponge and Expanded Cellular Rubber Products
1992SAE J18-1992 Sponge and Expanded Cellular Rubber Products (July 1992)