-444 BLACK BUNA 50D O-RING

The H50444 is an AS568-444 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 7.725 in (196.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.275 in (210.19 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against propane and butane, water, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ozone and direct sunlight or ketones call for a different compound.

Typical settings include automotive, fluid power, and general industrial maintenance.

Order part number H50444, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.