3.1MM CS X 84.4MM ID BLACK BUNA 90D

The H90M3.1X84.4 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 84.4 mm (3.323 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 90.6 mm (3.57 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope. Source specification: Metric O-RING, JIS G85.

As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists water, propane and butane, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or polar solvents.

It sees regular use in construction equipment, automotive, and agricultural equipment.

Order part number H90M3.1X84.4, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.