Buna 70-109-Black-Pk850

The SB-H70109-850 is an AS568-109 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 0.299 in (7.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.505 in (12.83 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. This item is further identified as.5IDX.3125"ODX.0938"CS.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. The material holds up against greases and lubricants, petroleum-based oils, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

You will find this material specified across fluid power, automotive, and general industrial maintenance.

This item is sold by the bag under part number SB-H70109-850. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.