Buna 70-228-Black-Pk100

Part number SB-H70228-100 is an AS568-228 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.234 in (56.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.512 in (63.8 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: 2.5IDX2.25"ODX.125"CS.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. This material stands up to water, greases and lubricants, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to polar solvents or automotive brake fluid will shorten service life.

Typical settings include fluid power, agricultural equipment, and general industrial maintenance.

SB-H70228-100 ships by the bag. Nominal inside diameter is listed as 2 1/4 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.