5.7MM CS X 47.6MM ID BLACK BUNA 90D

APG stocks the H90M5.7X47.6, a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 47.6 mm (1.874 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 59 mm (2.32 in). An o-ring compresses into its gland to block fluid or gas migration across a joint. Additional detail on this item: Metric O-RING, JIS P48A.

The material holds up against hydraulic fluids, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving polar solvents or ketones call for a different compound.

It sees regular use in fluid power, automotive, and agricultural equipment.

This item is sold individually under part number H90M5.7X47.6. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.