Buna 70-441-Black-Pk2

Ordered as SB-H70441-2, this is an AS568-441 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 6.975 in (177.17 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.525 in (191.14 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. This item is further identified as 0.275CSX6.975"IDX7.525"OD.

As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The compound resists petroleum-based oils, many alcohols, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or strong acids call for a different compound.

Maintenance and OEM teams specify it across construction equipment, fluid power, and automotive.

This item is sold by the bag under part number SB-H70441-2. Check the compound against your process media, pressure and temperature before committing to a design. 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.