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ASTM International, 06/15/2013
Publisher: ASTM
File Format: PDF
$33.00$67.00
Published:15/06/2013
Pages:12
File Size:1 file , 150 KB
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1.1 This test method covers quantitative procedures for the evaluation of the compatibility of automotive engine oils with several reference elastomers typical of those used in the sealing materials in contact with these oils. Compatibility is evaluated by determining the changes in volume, Durometer A hardness and tensile properties when the elastomer specimens are immersed in the oil for a specified time and temperature.
1.2 Effective sealing action requires that the physical properties of elastomers used for any seal have a high level of resistance to the liquid or oil in which they are immersed. When such a high level of resistance exists, the elastomer is said to be compatible with the liquid or oil.
1.3 This test method provides a preliminary or first order evaluation of oil/elastomer compatibility only. Because seals might be subjected to static or dynamic loads, or both, and they can operate over a range of conditions, a complete evaluation of the potential sealing performance of any elastomer-oil combination in any service condition usually requires tests additional to those described in this test method.
1.4 The several reference elastomer formulations specified in this test method were chosen to be representative of those used in both heavy-duty diesel engines and passenger-car spark-ignition engines (the latter are covered in Annex A2). The procedures described in this test method can, however, also be used to evaluate the compatibility of automotive engine oils with different elastomer types/formulations or different test durations and temperatures to those employed in this test method.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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.
1.7 This test method is arranged as follows:
Section
Scope
1
Referenced Documents
2
Terminology
3
Summary of Test Method
4
Significance and Use
5
Apparatus
6
Reference Materials
7
Procedure
8
Calculations
9
TMC 1006-1 Reference Oil
10
Report
11
Precision and Bias
12
Keywords
13
Formulations and Physical Properties for Reference Elastomers Typically Used in Heavy-Duty Diesel Engines
Annex A1
Test Procedure for Reference Elastomers Typically Used in Spark-Ignition Engines
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