This o-ring is supplied in AS568-159 black Buna-N (Nitrile) 50 Shore A supplied with an inside diameter of 4.987 in (126.67 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.193 in (131.9 mm), catalogued under part number H50159. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material holds up against propane and butane, hydraulic fluids, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or polar solvents.
You will find this material specified across construction equipment, fluid power, and hydraulic and pneumatic systems.
Order part number H50159, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -159 BLACK BUNA 50D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 4.987 inch (126.67 mm)
Actual Outside Diameter 5.193 inch (131.9 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity