APG stocks the H50441, an AS568-441 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 6.975 in (177.17 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.525 in (191.14 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, propane and butane, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or automotive brake fluid are present.
It sees regular use in hydraulic and pneumatic systems, fluid power, and construction equipment.
This item is sold individually under part number H50441. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -441 BLACK BUNA 50D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 6.975 inch (177.17 mm)
Actual Outside Diameter 7.525 inch (191.14 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity