5.7MM CS X 54.6MM ID BLACK BUNA 90D

The H90M5.7X54.6 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 54.6 mm (2.15 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 66 mm (2.6 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. Supplementary detail from the product record: Metric O-RING, JIS P55.

Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. It resists propane and butane, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ketones.

It sees regular use in construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H90M5.7X54.6. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.