Active Standard: D4289 - 13
The NBR elastomer material specified in the standard is no longer being made by the original supplier (ARDL). A replacement material is being made available by Rubber-Tech. Limited testing of different GC-LB greases is now complete and this committee understands that SAE has approved it for use with a designation of SAE AMS 3217/2C. The limited testing completed shows no bias between the old material and the new material but due to lack of the old material, more in depth evaluation will not be possible.
Keywordscompatibility; density; elastomer; fluid; grease; immersion; lubricant; lubricating grease; relative; rubber; seal(s); Compatibility--petroleum products; Elastomeric materials/applications; Hardness tests; Lubricating grease; Specific gravity--petroleum products; Volumetric measurement--petroleum products;
Ballot Item Approved as D4289-2013 and Pending Publication