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This SAE Recommended Practice applies to flywheels and flywheel-starter ring gear assemblies used with internal combustion engines of the spark ignition and diesel type equipped with a governor or speed limiting device. Engine sizes are those capable of using SAE No. 6 through SAE No. 00 flywheel housings. This document applies to methods used to determine the rotational speed capability of flywheels for stresses imposed by centrifugal forces only.

This SAE Recommended Practice applies to flywheels and flywheel-starter ring gear assemblies used with internal combustion engines of the spark ignition and diesel type equipped with a governor or speed limiting device. Engine sizes are those capable of using SAE No. 6 through SAE No. 00 flywheel housings. This document applies to methods used to determine the rotational speed capability of flywheels for stresses imposed by centrifugal forces only.

This practice applies to flywheels and flywheel-starter ring gear assemblies used with internal combustion engines of the spark ignition and diesel type equipped with a governor or speed limiting device. Engine sizes are those capable of using SAE No. 6 through SAE No. 00 flywheel housings. This practice applies to methods used to determine the rotational speed capability of flywheels for stresses imposed by centrifugal forces only.

This SAE Recommended Practice applies to flywheels and flywheel-starter ring gear assemblies used with internal combustion engines of the spark ignition and diesel type equipped with a governor or speed limiting device. Engine sizes are those capable of using SAE No. 6 through SAE No. 00 flywheel housings. This document applies to methods used to determine the rotational speed capability of flywheels for stresses imposed by centrifugal forces only.

The 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 SAE J200 - ASTM D 2000. Gasket coatings are not covered, since details thereof are intended to be given on engineering drawings or in separate specifications.

These specifications for SAE J90 are intended to define the basic properties of commercial nonmetallic gasketing materials commonly used in automotive applications. These include materials composed of asbestos or other inorganic fibers, cork, or cellulose or other organic fibers, in combination with various binders or impregnants. Rubber compounds without fibrous or cork reinforcement are not included since they are covered in SAE Standard, Specifications for Elastomer Compounds for Automotive Applications—SAE J14, and in ASTM D 735-61T. Although the test methods and values are designed to describe the basic properties of the material in each category, they do not define all of, the properties which govern gasket performance. Caution should, therefore, be exercised in using these specifications as a basis for the selection of materials.

The 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 SAE J200—ASTM D 2000. Gasket coatings are not covered, since details thereof are intended to be given on engineering drawings or in separate specifications.

This SAE Recommended Practice covers the dimensional and material requirements of rubber O-rings for automotive application and rectangular section rubber seal rings for automotive applications.

Bond, as it relates to elastomeric seals, is defined as “The adhesion, established by vulcanization, between two cured elastomeric surfaces, or between one cured elastomeric surface and one nonelastomeric surface.”1 Vulcanization refers in this case to chemical bonding. Good bond is essential to the function of elastomeric radial lip seals and other precision bonded parts. This SAE Recommended Practice describes a universal bond test fixture developed by the RMA that can be mounted to a conventional tensile test machine. This will allow a quantitative evaluation of bond rather than a merely qualitative one.

Bond, as it relates to elastomeric seals, is defined as "The adhesion, established by vulcanization, between two cured elastomeric surfaces, or between one cured elastomeric surface and one nonelastomeric surface".1 Vulcanization refers in this case to chemical bonding. Good bond is essential to the function of elastomeric radial lip seals and other precision. bonded parts. This SAE Recommended Practice describes a universal bond test fixture developed by the RMA that can be mounted to a conventional tensile test machine. This will allow a quantitative evaluation of bond rather than a merely qualitative one.

This SAE Recommended Practice presents information which is intended as a guide for proper designing, selection, application, and servicing of liquid, formed-in-place gasket (FIPG) materials.