Buna 70-333-Black-Pk3

SB-H70333-3 is an AS568-333 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.895 in (73.53 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: 2.875IDX2.5"ODX.1875"CS.

This material stands up to propane and butane, many alcohols, and greases and lubricants. 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. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to ozone and direct sunlight or polar solvents will shorten service life.

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

Reference part number SB-H70333-3 when ordering; the item is sold by the bag. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.