8.4MM CS X 229.5MM ID BLACK BUNA 70D

Part number H8.4X229.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 229.5 mm (9.035 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 246.3 mm (9.7 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Additional detail on this item: Metric O-RING, JIS P230.

It resists hydraulic fluids, petroleum-based oils, and many alcohols. Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid.

Maintenance and OEM teams specify it across agricultural equipment, general industrial maintenance, and fluid power.

This item is sold individually under part number H8.4X229.5. Unit weight is approximately 50.541 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.