3MM CS X 49.5MM ID BLACK BUNA 90D

APG stocks the H90M3X49.5, a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 49.5 mm (1.949 in), a cross section of 3 mm (0.118 in), and an outside diameter of 55.5 mm (2.19 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. The compound resists propane and butane, water, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or strong acids.

It sees regular use in construction equipment, general industrial maintenance, and agricultural equipment.

Reference part number H90M3X49.5 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.