8.4MM CS X 244.5MM ID BLACK BUNA 70D

Part number H8.4X244.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 244.5 mm (9.626 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 261.3 mm (10.29 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS P245.

Expect good resistance to many alcohols, water, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or automotive brake fluid are present.

Typical settings include general industrial maintenance, automotive, and agricultural equipment.

This item is sold individually under part number H8.4X244.5. Unit weight is approximately 53.808 g. 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.