8.4MM CS X 159.5MM ID BLACK BUNA 70D

H8.4X159.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 159.5 mm (6.28 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 176.3 mm (6.94 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Additional detail on this item: Metric O-RING, JIS P160.

This material stands up to hydraulic fluids, greases and lubricants, and petroleum-based oils. Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

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

This item is sold individually under part number H8.4X159.5. Unit weight is approximately 35.814 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.