Buna 70-133-Black-Pk100

APG stocks the SB-H70133-100, an AS568-133 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 1.799 in (45.69 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.005 in (50.93 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: 2IDX1.8125"ODX.0938"CS.

As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The compound resists petroleum-based oils, many alcohols, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

Maintenance and OEM teams specify it across agricultural equipment, general industrial maintenance, and fluid power.

Stocked as SB-H70133-100 and sold by the bag. Nominal inside diameter is listed as 1 13/16 inch. 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.