8.4MM CS X 219.1MM ID BLACK BUNA 70D

Part number H8.4X219.1 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 219.1 mm (8.626 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 235.9 mm (9.29 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The compound resists greases and lubricants, propane and butane, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to polar solvents or strong acids will shorten service life.

You will find this material specified across fluid power, automotive, and agricultural equipment.

This item is sold individually under part number H8.4X219.1. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.