4MM CS X 243MM ID BLACK BUNA 70D

The H4X243 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 243 mm (9.567 in), a cross section of 4 mm (0.157 in), and an outside diameter of 251 mm (9.88 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to many alcohols, propane and butane, and water. Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or automotive brake fluid.

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

Reference part number H4X243 when ordering; the item is sold individually. Unit weight is approximately 11.909 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.