-279 BLACK BUNA 50D O-RING

H50279 is an AS568-279 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 12.984 in (329.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 13.262 in (336.85 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against many alcohols, greases and lubricants, and petroleum-based oils. Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Typical settings include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

Order part number H50279, sold individually. Nominal inside diameter is listed as 13 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.