This o-ring is supplied in AS568-905 black Buna-N (Nitrile) 50 Shore A supplied with an inside diameter of 0.414 in (10.52 mm), a cross section of 0.072 in (1.83 mm), and an outside diameter of 0.558 in (14.17 mm), catalogued under part number H50905. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Expect good resistance to greases and lubricants, petroleum-based oils, and hydraulic fluids. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or automotive brake fluid are present.
It sees regular use in hydraulic and pneumatic systems, fluid power, and general industrial maintenance.
Stocked as H50905 and sold individually. Nominal inside diameter is listed as 5/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -905 BLACK BUNA 50D O-RING
Actual Cross Section 0.072 inch (1.83 mm)
Actual Inside Diameter 0.414 inch (10.52 mm)
Actual Outside Diameter 0.558 inch (14.17 )
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity