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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This standard is not included in any packages. To ensure full saturation, the testing ran for 2, hours, or 12 weeks.

No other units of measurement are included in this standard. Two HNBRs, for instance, might demonstrate different property changes depending on the levels of fillers and additives. 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.

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.

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 also available to be included in Standards Subscriptions. But volume swell does not indicate chemical reaction on its own. It is recommended that the agreed upon precision values be stated in the user’s lubricant specification. Virtually all other equipment and supplies specified in the procedure are stock items in lubricants laboratories.

The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases.

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Chemical Compatibility Study Reveals Shortfalls in Standard Testing Methods

No other units of measurement are included in this standard. This was found to be a significant gap in historic testing methods.

The duration times dedicated to the tests are not standardized, nor are they often specified. Testing at the D4298 Seals laboratory revealed that some fluid-material combinations that appear compatible at 1, hours later became incompatible after 2, hours.

Theoretical models that have been established to predict fluid compatibility are based largely on the laws of chemistry. 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.

Results of the extended tests were startling. 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.

The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases. Need more than one copy? Contraction, however, is more problematic because loss of seal volume reduces seal force. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. 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.

Testing of fluids was not included in Test Method D —95 and earlier versions. In most cases, testing reveals little to no information about any actual changes in material properties. 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.

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ASTM D4289 – 13(2014)e1

For the past several years, System Awtm, 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 fluids. This should include parameters to accelerate the effects of pressure, temperature and surface finish, as well as motion, such as reciprocating, rotary and swivel.

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.

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

Approximately 25 percent of the material-fluid combinations that successfully f4289 at the day mark, soon began to fail near or after 60 days. Proceed astn Checkout Continue Shopping.

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.

For specific hazard statements, see Note 6, Note 7, and Note 8. Volume swell is a good indicator of fluid absorption, which is important because many seal grooves have between percent free space available.