3.5MM CS X 175MM ID BLACK BUNA 70D

H3.5X175 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 175 mm (6.89 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 182 mm (7.17 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to hydraulic fluids, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

You will find this material specified across hydraulic and pneumatic systems, fluid power, and construction equipment.

Order part number H3.5X175, sold individually. Unit weight is approximately 6.589 g. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.