-429 BLACK BUNA 90D O-RING

Part number H90429 is an AS568-429 black Buna-N (Nitrile) 90 Shore A O-Ring built to 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). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against greases and lubricants, many alcohols, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

Common environments for this compound include fluid power, construction equipment, and hydraulic and pneumatic systems.

Order part number H90429, sold individually. Unit weight is approximately 22.584 g and nominal inside diameter is listed as 5 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.