Ordered as H50901, this is an AS568-901 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 0.185 in (4.7 mm), a cross section of 0.056 in (1.42 mm), and an outside diameter of 0.297 in (7.54 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to propane and butane, many alcohols, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.
Maintenance and OEM teams specify it across construction equipment, automotive, and general industrial maintenance.
Stocked as H50901 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -901 BLACK BUNA 50D O-RING
Actual Cross Section 0.056 inch (1.42 mm)
Actual Inside Diameter 0.185 inch (4.7 mm)
Actual Outside Diameter 0.297 inch (7.54 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity