8.4MM CS X 234.5MM ID BLACK BUNA 90D

Part number H90M8.4X234.5 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 234.5 mm (9.232 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 251.3 mm (9.89 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Supplementary detail from the product record: Metric O-RING, JIS P235.

Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material holds up against petroleum-based oils, propane and butane, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or automotive brake fluid call for a different compound.

It sees regular use in general industrial maintenance, construction equipment, and agricultural equipment.

Reference part number H90M8.4X234.5 when ordering; the item is sold individually. Unit weight is approximately 58.944 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.