The M83248-1-014 is a military specification fluorocarbon (FKM / Viton®-type) O-ring used for sealing in aircraft fuel, oil, and hydraulic systems. It is manufactured under MIL-R-83248 standards, which define dimensional accuracy, material quality, and performance requirements for aerospace sealing components.

Made from fluorocarbon rubber (FKM), this O-ring provides strong resistance to aviation fuels, turbine oils, and hydraulic fluids, while maintaining elasticity under elevated temperatures and compression. It is widely used in fuel system fittings, valves, engine accessories, and hydraulic assemblies, where long-term sealing reliability is critical.

Compared to nitrile-based seals, the M83248 series offers improved heat resistance, chemical stability, and lower compression set, making it suitable for demanding aviation environments.

Key features include:

Proponent part number: M83248-1-014
Military specification: MIL-R-83248
Material: Fluorocarbon rubber (FKM / Viton® type)
Inner diameter: approx. 0.482" – 0.496"
Cross-section: approx. 0.067" – 0.073"
Temperature range: approx. -20°F to 400°F
Designed for aircraft fuel, oil, and hydraulic sealing
High resistance to aviation hydrocarbons and turbine fluids
Low compression set for long-term sealing performance
Standardized aerospace interchange part
Suitable for static and dynamic sealing applications
Common in aircraft maintenance and overhaul use cases