5.7MM CS X 154.3MM ID BLACK BUNA 90D

Part number H90M5.7X154.3 is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 154.3 mm (6.075 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 165.7 mm (6.52 in). An o-ring compresses into its gland to block fluid or gas migration across a joint. Source specification: Metric O-RING, JIS G155.

This material stands up to petroleum-based oils, propane and butane, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for low compression set under sustained load, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ozone and direct sunlight will shorten service life.

Common environments for this compound include general industrial maintenance, agricultural equipment, and automotive.

Reference part number H90M5.7X154.3 when ordering; the item is sold individually. Unit weight is approximately 17.727 g. Check the compound against your process media, pressure and temperature before committing to a design.