APG stocks the H50409, an AS568-409 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.025 in (76.84 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
It resists greases and lubricants, water, and petroleum-based oils. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. 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 ketones are present.
It sees regular use in construction equipment, fluid power, and hydraulic and pneumatic systems.
Stocked as H50409 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -409 BLACK BUNA 50D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 2.475 inch (62.87 mm)
Actual Outside Diameter 3.025 inch (76.84 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity