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ASTM D395-16e1

Historical Revision

Standard Test Methods for Rubber Property—Compression Set

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1.1 These test methods cover the testing of rubber intended for use in applications in which the rubber will be subjected to compressive stresses in air or liquid media. They are applicable particularly to the rubber used in machinery mountings, vibration dampers, and seals. Three test methods are covered as follows:

Test Method

Section

 

A—Compression Set Under Constant Force in Air

8 – 11

B—Compression Set Under Constant Deflection in Air

12 – 15

C—Compression Set Under Constant Deflection in Air Considering Material Hardness

16 – 21

1.2 The choice of test method is optional, but consideration should be given to the nature of the service for which correlation of test results may be sought. Unless otherwise stated in a detailed specification, Test Method B shall be used.

1.3 Test Method B is not suitable for vulcanizates harder than 90 IRHD.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 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.


4.1 Compression set tests are intended to measure the ability of rubber compounds to retain elastic properties after prolonged action of compressive stresses. The actual stressing service may involve the maintenance of a definite deflection, the constant application of a known force, or the rapidly repeated deformation and recovery resulting from intermittent compressive forces. Though the latter dynamic stressing, like the others, produces compression set, its effects as a whole are simulated more closely by compression flexing or hysteresis tests. Therefore, compression set tests are considered to be mainly applicable to service conditions involving static stresses. Tests are frequently conducted at elevated temperatures.

SDO ASTM: ASTM International
Document Number D395
Publication Date April 15, 2016
Language en - English
Page Count 8
Revision Level 16e1
Supercedes
Committee D11.10
Publish Date Document Id Type View
July 1, 2018 D0395-18 Revision
April 15, 2016 D0395-16E01 Revision
April 15, 2016 D0395-16 Revision
Aug. 1, 2015 D0395-15 Revision
July 1, 2014 D0395-14 Revision
Aug. 10, 2003 D0395-03 Revision
Dec. 10, 2002 D0395-02 Revision
May 10, 2001 D0395-98 Revision
May 10, 2001 D0395-01 Revision
May 1, 2008 D0395-03R08 Reaffirmation