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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Although some guidelines can be used to make engineering decisions, these values could be flexible or rigid, depending on the application.

Norma ASTM D()e1

This standard is also available to be included in Standards Subscriptions. However, they can be correlated in many instances. 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.

Standards Subsctiption may be the perfect solution. This should include parameters to accelerate the effects of pressure, temperature and surface finish, as well as motion, such as reciprocating, rotary and swivel. Several of the fluid-material combinations that passed successfully within 28 days failed after longer exposures.

The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases. Proceed to Checkout Continue Shopping. For specific warning statements, see 8.

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.

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? Most test standards also do not incorporate changes in the transition temperature, which is critical for low-temperature applications. In such instances, the repeatability and reproducibility values stated in Section 12 do not apply, and the user and supplier should agree on acceptable limits of precision. If the document is revised or amended, you will be notified by email.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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We have no amendments or corrections for this standard. No other units of measurement are included in this standard.

For the past several years, System Seals, a research-based seal manufacturer in Cleveland, has undertaken an exhaustive fluid compatibility study that paired more than combinations of seal materials with commonly used industrial astn. The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases.

When volume increases are limited to 15 percent, contraction can be no more than 5 percent. No other units of measurement are included in this standard. This standard is also available to be included in Standards Subscriptions. For specific warning statements, see 8. The compatibility testing consisted of three main components: Volume swell is a good indicator of fluid absorption, which is important because many seal grooves have between percent free space available.

In most cases, testing reveals little to no information about any actual changes in material properties. To advance the compatibility study, application testing should d42289 performed. Some of the tests were performed by customer request, while others were conducted to round out the research and record for future use.

Your Alert Profile lists the documents that will be monitored. As the voice of the U. We have no amendments or corrections for this standard. Limited exposure times and a lack of application-based testing have created shortfalls that have paved the way for industry-wide acceptance of generalizations about entire material families that mistakenly group different materials into single categories, the research found.

Traditional methods to determine elastomer seal compatibility with specific fluids have for decades produced misleading results, according to a new research from System Seals Laboratories. ASTM D, for instance, typically incorporates tests with a maximum exposure time of 70 hours, which significantly limits long-term predictive capabilities.

S4289 other units of measurement are included in this standard. If the document is revised or amended, you will be notified by email. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

This standard is not included in any packages. In the System Seals trials, all of the materials underwent additional testing, included breaking points, tensile strength, elongation, volume swell, abrasion resistance and hardness — all qualities required for safe seal performance and longevity.

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The times vary considerably among manufactures, usually ranging from a week to 30 days.

These include treating long polymers chains as super-condensed gasses and then defining their empirical values. Testing Parameters The base test parameters included volume swell, mass and density changes, hardness, tensile strength, elongation, percent modulus, work function area under tensile awtm up to 20 percentcompression set and abrasion resistance.

Chemical Compatibility Study Reveals Shortfalls in Standard Testing Methods

But volume swell does not indicate chemical reaction on its own. Inasmuch as the precision values apply only to the elastomers specified in Annex A1 of Test Method Dwhen a lubricant specification requires some other elastomer, the user and supplier of the lubricant should agree to the values of ast precision.

Subscription pricing is determined by: Link to Active This link will always route to the current Active version of the standard. It is recommended that the agreed upon precision values be stated in the user’s lubricant specification. To ensure full saturation, the testing ran for 2, hours, or 12 weeks. To address these limitations, testing standards have been established to evaluate compatibility.

Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids

And in many test recommendations, there are no established guidelines for static or dynamic 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. However, they can be correlated in many instances.

To fully evaluate material-fluid compatibility, System Seals developed new methods from various standards, as well as experience from seals in broad applications.

In such instances, the repeatability aatm reproducibility values stated in Section 12 do not apply, and the user and supplier should agree on acceptable limits of precision.