ASTM D4289 PDF

We perform testing by ASTM D to evaluate the compatibility of lubricants with elastomers by measuring the changes in an elastomer immersed in lubricant . ASTM D()e1. Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids. standard by ASTM. Buy ASTM D TEST METHOD FOR ELASTOMER COMPATIBILITY OF LUBRICATING GREASES AND FLUIDS from SAI Global.

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Please first verify your email before subscribing to alerts. 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.

Need more than one copy? To fully evaluate material-fluid compatibility, System Seals developed new methods from various standards, as well as experience from seals in broad applications. In critical applications where the lubricant will be in contact with rubber parts subject to severe flexing, extreme temperatures, or similar stresses, other rubber properties, such as tensile strength and elongation, should also be evaluated as they may be more indicative of the true compatibility characteristics.

ASTM D Standard Method of Testing Compatibility of Lubricating Grease with Elastomers

These results are limited for a number of reasons. As the voice of the U. Standards Subsctiption may be the perfect solution. Similarly, this test method can be used aetm specifications for lubricating fluids as well. Virtually all other equipment and supplies specified in the procedure are stock items in lubricants laboratories. No other units of measurement are included in this standard.

ASTM D4289 – 13(2014)e1

ASTM D incorporates additional property evaluations, such as work function and compression set, but limits the test duration to only 1, hours. D4829 scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases. Friction, wear and motion can contribute to additional failure risks.

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And in many test recommendations, there are no established guidelines for static or dynamic applications. In this respect, this test method is useful for lubricant specifications for example, Specification D Results of the extended tests were startling.

Even when xstm times are sufficiently long, the evaluations might be limited to measuring changes in only volume and hardness.

The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases. Contraction, however, is more problematic because loss of seal volume reduces seal force.

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Chemical Compatibility Study Reveals Shortfalls in Standard Testing Methods

Several of the fluid-material combinations that passed successfully within 28 days failed after longer exposures. Approximately 25 percent of the material-fluid combinations that successfully passed at the day mark, soon began to fail near or after 60 days. For specific warning statements, see 8. You may delete a document from your Alert Profile at any time.

In critical applications where the lubricant will be in contact with rubber parts subject to severe flexing, extreme temperatures, or similar stresses, other rubber properties, such as tensile strength and elongation, should also be evaluated as they may be wstm indicative of the true compatibility characteristics. In most cases, testing reveals little to no information about any actual changes in material properties. Please first verify your email before subscribing to alerts.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

And, it is impossible to accurately deduce material astmm for one material based on the results of another, even if the materials are in the same family.

Similarly, this test method can be used in specifications for lubricating fluids as well. Already Subscribed to this document. Excepting the Shore Durometer A, asttm test method requires no specialized, rubber-testing equipment. Note The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating d42289 and greases. Ultimately, all the relevant properties must be evaluated by an engineer, who might find the need to include additional calculations to account for changes in mechanical properties.

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Testing of fluids was not included in Test Method D —95 and earlier versions.

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. When the preparation of such coupons is not feasible, or the lubricant specification requires the use of rubber products that do not have a suitable size or configuration for use in preparing coupons for testing Practice Dthis test method can be used as a guide for evaluating compatibility.

For specific hazard statements, see Note 6, Note 7, and Note 8. This significantly extended most of the industry standards, which rely on an average duration of about a month. This was found to be a significant gap in historic testing methods. However, they can be correlated in many instances.

We have no document history for this standard. Inasmuch as the precision values apply only to the elastomers specified in Annex Aetm of Test Method Dwhen a lubricant astj requires some other elastomer, the user and supplier of the lubricant should agree to the values of acceptable precision.

These include treating long polymers chains as super-condensed gasses and then defining their empirical values. Testing of fluids was not included in Test Method D —95 and earlier versions. Excepting the Shore Durometer A, this test method requires no specialized, rubber-testing equipment. Testing at the System Seals laboratory revealed that some fluid-material combinations that appear compatible at 1, hours later became incompatible after 2, hours.