8.4MM CS X 239.5MM ID BLACK BUNA 90D

The H90M8.4X239.5 is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 239.5 mm (9.429 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 256.3 mm (10.09 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. Supplementary detail from the product record: Metric O-RING, JIS P240.

Expect good resistance to greases and lubricants, water, and hydraulic fluids. Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Common environments for this compound include automotive, general industrial maintenance, and fluid power.

Reference part number H90M8.4X239.5 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.