AMS 3218E supports the testing of a fluorocarbon (FKM) elastomer used in components that come into contact with a wide variety of fuels, synthetic lubricants, and hydraulic fluids while in service, as well as ambient atmosphere. Typical service temperatures for these components range from -20°F (-29°C) to 400°F (204°C).

AMS 3218E is an appropriate testing standard for FKM elastomer sheets, strips, tubing, extrusions, and molded shapes of silicone rubber. It is not suitable for molded rings or O-ring cord, compression seals, or molded-in-place gaskets. Additionally, this class of elastomers may not be compatible with certain high temperature stabilized (HTS) engine oils, though this should be evaluated on a case-by-case basis.

How Smithers can Help

Smithers material testing experts can work with your team to understand material requirements and design a testing program to validate materials to this standard.

Please note: The information outlined above is to be used as a reference for AMS3218E
Elastomer: Fluorocarbon (FKM) Rubber High-Temperature-Fluid Resistant Low Compression Set / 85 to 95 Type A Hardness For Seals in Fuel Systems and Specific Engine Oil Systems. Please refer to SAE International for full details and the most current revision.

Contact our Experts

Cancel
Show Policy

Latest Resources

See all resources