5MM CS X 58MM ID BLACK BUNA 70D

H5X58 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 58 mm (2.283 in), a cross section of 5 mm (0.197 in), and an outside diameter of 68 mm (2.68 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against hydraulic fluids, many alcohols, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or polar solvents will shorten service life.

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

H5X58 ships individually. Unit weight is approximately 4.746 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.