3.1MM CS X 99.4MM ID BLACK BUNA 90D

H90M3.1X99.4 is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 99.4 mm (3.913 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 105.6 mm (4.16 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint. Source specification: Metric O-RING, JIS G100.

The material holds up against hydraulic fluids, water, and greases and lubricants. Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ketones are present.

Typical settings include hydraulic and pneumatic systems, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H90M3.1X99.4. Unit weight is approximately 3.3455 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.