This specification covers a butadiene-acrylonitrile (NBR) rubber in the form of molded rings. These rings have been used typically for sealing at temperatures as low as -55 degrees C (-67 degrees F) where resistance to hot petroleum-base lubricating oil is required, but usage is not limited to such applications.
Employing ‘ball-on-cylinder’ philosophy, a non-rotating steel ball is held in a vertically mounted chuck and using an applied load is forced against an axially mounted steel cylinder. The test cylinder is rotated at a fixed speed while being partially immersed in a lubricant reservoir. This maintains the cylinder in a wet condition and continuously transports a lubricating film of test fluid to the ball and cylinder interface. The diameter of the wear scar generated on the test ball is used as a measure of the fluid’s lubricating properties. The apparatus can be used, by adjusting the operating conditions, to reproduce two different wear mechanisms; mild and severe wear, the ALTE therefore has the ability to assess a lubricant’s performance in that regard.
This SAE Aerospace Standard (AS) establishes the surface pretreatment, temperature, and baking time required to cure AS6449 Type I and Type II solid film lubricant (SFL) when it is applied over the surfaces of manufactured parts of various metals. Application method may be dipping or spraying.
This SAE Information Report lists engine and laboratory tests for service fill engine oils which are associated with specifications and classifications established outside of SAE J304 and SAE J183. These specifications and classifications include those developed prior to April 1, 2017, by international technical societies, as well as individual original equipment manufacturers. The information contained within this report applies to engine oils utilized in gasoline- and diesel-powered automotive vehicles.