8.4MM CS X 149.1MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 149.1 mm (5.87 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 165.9 mm (6.53 in), catalogued under part number H8.4X149.1. It delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or ketones call for a different compound.

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

This item is sold individually under part number H8.4X149.1. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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.