Basic o ring chemical resistance compatibility information is based on isolated generic o ring material testing in optimal conditions at room temperature and pressure. Fluid compatibility guide a detailed list of fluidschemicals with their compatibility ratings for use with the most common o ring materials.
O Rings An Overview Sciencedirect Topics
O ring material for transmission fluid. O ring are one of the most commonly used fluid power seals. Each of these material types has its pros and cons. These seals have a simple donut shaped ring technically called a toroid and are manufactured using pliable material such as elastomers like silicone buna n and ethylene propylene. Note that each type is actually a family of rubber compounds. O ring chemical compatibility chart learn how different o ring materials and chemicals interact. Ethylene acrylic elastomer aem is the most common elastomer in north america but various fluorocarbon fkm elastomers are also used.
The term buna n is really not much more specific than the term steel. 55 to 250 degrees fahrenheit. Both these material types have their advantages and disadvantages. Buna n viton and epdm. Aem is the most cost effective but this material degrades more quickly in transmission fluids. A widely used economical material that has strong wear resistance and mechanical properties.
For the purposes of this article we will focus on just three common rubber types found in o rings and similar automotive seals. In addition to this material various fluorocarbon fkm viton elastomers are also used in these applications. O ring materials compatible with automatic transmission fluid select a material to show its compatible chemicals aflas 4 buna n nitrile 4 butyl 1 chemraz 4 epichlorohydrin 0 ethylene propylene 1 fluorocarbon 4 fluorosilicone 0 hypalon 2 kalrez 0 natural rubber 1 neoprene 3 nitrile hydrogenated 4 polyacrylate 4. They can also be made from a number of different substances. Heres a guide to the kinds of o ring materials we use how they are used and when to avoid using them. One commonly used material for o rings in automatic transmissions is ethylene acrylic elastomer aem also known as vamac.
O ring groove design guides o ring groove dimension guidelines for standard o ring grooves metric o ring grooves jis o ring grooves and other o ring gland designs.
Gallery of O Ring Material For Transmission Fluid
