-429 BLACK BUNA 50D O-RING

H50429 is an AS568-429 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 4.975 in (126.37 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.525 in (140.34 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is known for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. The material holds up against hydraulic fluids, water, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

Maintenance and OEM teams specify it across construction equipment, automotive, and fluid power.

Reference part number H50429 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.