8.4MM CS X 204.5MM ID BLACK BUNA 70D

The H8.4X204.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 204.5 mm (8.051 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 221.3 mm (8.71 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. The compound resists water, propane and butane, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or automotive brake fluid will shorten service life.

Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.

This item is sold individually under part number H8.4X204.5. Unit weight is approximately 45.664 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.