Buna 70-272-Black-Pk5

This o-ring is supplied in AS568-272 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 9.484 in (240.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.762 in (247.95 mm), catalogued under part number SB-H70272-5. It creates a positive seal at flange, piston and rod interfaces without added hardware. The catalog record notes: 9.75IDX9.5"ODX.125"CS.

Buna-N (Nitrile) is specified here for low compression set under sustained load and economical choice for high-volume maintenance programs. It resists propane and butane, petroleum-based oils, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

Typical settings include fluid power, construction equipment, and agricultural equipment.

SB-H70272-5 ships by the bag. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.