Designation: D 2000 – 08
Approved by
Society of Automotive Engineers
SAE Recommended Practice J200
Standard Classification System for
Rubber Products in Automotive Applications
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This standard is issued under the fixed designation D 2000; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This classification system covers the properties of vul-
canized rubber materials (natural rubber, reclaimed rubber,
synthetic rubbers, alone or in combination) that are intended
for, but not limited to, use in rubber products for automotive
applications.
N
OTE
1—This classification system may serve many of the needs of
other industries in much the same manner as SAE numbered steels. It must
be remembered, however, that this system is subject to revision when
required by automotive needs. It is recommended that the latest revision
always be used.
1.2 This classification system is based on the premise that
the properties of all rubber products can be arranged into
characteristic material designations. These designations are
determined by types, based on resistance to heat aging, and
classes, based on resistance to swelling in oil. Basic levels are
thus established which, together with values describing addi-
tional requirements, permit complete description of the quality
of all elastomeric materials.
1.3 In all cases where the provisions of this classification
system would conflict with those of the detailed specifications
for a particular product, the latter shall take precedence.
N
OTE
2—When the rubber product is to be used for purposes where the
requirements are too specific to be completely prescribed by this classi-
fication system, it is necessary for the purchaser to consult the supplier in
advance, to establish the appropriate properties, test methods, and speci-
fication test limits.
1.4 The values stated in SI units are to be regarded as
standard.
2. Referenced Documents
2.1 ASTM Standards:
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Test Methods for Rubber Property—Compression
Set
Test Methods for Vulcanized Rubber and Thermo-
plastic Elastomers—Tension
Test Methods for Rubber Property—Adhesion to
Rigid Substrates
Test Methods for Rubber Deterioration—Dynamic
Fatigue
Test Method for Rubber Property—Effect of Liquids
Test Method for Rubber—Deterioration in an Air
Oven
Test Methods for Rubber Properties in Compression
Test Method for Tear Strength of Conventional
Vulcanized Rubber and Thermoplastic Elastomers
Test Method for Rubber—Deterioration by Heating
in Air (Test Tube Enclosure)
Test Methods for Rubber Property—Staining of Sur-
faces (Contact, Migration, and Diffusion)
Test Methods for Rubber Properties in Compression
or Shear (Mechanical Oscillograph)
Test Methods for Rubber Property—Stiffening at
Low Temperatures: Flexible Polymers and Coated Fabrics
Test Methods for Rubber Deterioration—Cracking
in an Ozone Controlled Environment
Test Method for Rubber Deterioration—Surface
Ozone Cracking Outdoors or Chamber (Triangular Speci-
mens)
Test Method for Evaluating Rubber Property—
Retraction at Lower Temperatures (TR Test)
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This classification system is under the jurisdiction of ASTM Committee D11 on
Rubber and is the direct responsibility of Subcommittee D11.30 on Classification of
Rubber Compounds.
Current edition approved Jan. 1, 2008. Published January 2008. Originally
approved in 1962. Last previous edition approved in 2006 as D 2000 – 06a
e
1
.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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