5.7MM CS X 109.6MM ID BLACK BUNA 90D

H90M5.7X109.6 is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 109.6 mm (4.315 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 121 mm (4.76 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: Metric O-RING, JIS P110.

Buna-N (Nitrile) is specified for strong abrasion and tear resistance, low compression set under sustained load. The compound resists hydraulic fluids, greases and lubricants, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.

You will find this material specified across hydraulic and pneumatic systems, construction equipment, and fluid power.

Reference part number H90M5.7X109.6 when ordering; the item is sold individually. Unit weight is approximately 12.703 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.