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.
Developing New Test Methods To fully evaluate material-fluid compatibility, System Seals developed new methods from various standards, as well as experience from seals in broad applications.
These results are limited for a number of reasons. In the System Seals trials, d289 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.
Please first verify your email before subscribing to alerts. The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases.
ASTM D, for instance, typically incorporates tests with a maximum exposure time of 70 hours, which significantly limits long-term predictive capabilities.
It is the responsibility of the user of this standard to establish appropriate safety and health practices atm determine the applicability of regulatory limitations prior to use. 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.
In this respect, this test method is useful for lubricant specifications for example, Specification D If the document is revised or amended, you will be notified by email.
Excepting the Shore Durometer A, this test method requires no specialized, rubber-testing equipment. Standards Subsctiption may be the perfect solution.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Standards Subsctiption may be the perfect solution. An increase in mass might also indicate d2489 absorption, and a loss in mass usually indicates chemical degradation.
Testing of fluids was not included in Test Method D —95 and earlier versions. For specific warning statements, see 8. The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases.
For specific warning statements, see 8. Limited exposure times and a lack of application-based testing have created shortfalls that have paved the way for industry-wide acceptance of generalizations zstm entire material families that mistakenly group different materials into single categories, the research found.
We have no amendments or corrections for this standard. Proceed to Checkout Continue Shopping. 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 d4298 use.
Compatibility is evaluated by determining the d429 in volume and Durometer A hardness that occur when elastomer coupons are totally immersed in a lubricant sample for 70 h at either or oC or as required by the lubricant specification.
In addition to changes in hardness, the d44289 modulus needed to be tracked, as well as percent modulus, tensile strength and elongation at break. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Most test standards also do not incorporate changes in the transition temperature, which is critical for low-temperature applications. As the voice of the U.
ASTM D4289 – 13(2014)e1
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 acceptable precision. 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.
Results of the extended tests were startling. Historical Version s – view previous versions of standard.
Norma ASTM D()e1
Even when exposure times are sufficiently long, the evaluations might be limited to measuring changes in only volume and hardness. The times vary considerably among manufactures, usually ranging from a week to 30 days.
To address these limitations, testing standards have been established to evaluate compatibility.