8.4MM CS X 314.5MM ID BLACK BUNA 70D

The H8.4X314.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 314.5 mm (12.382 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 331.3 mm (13.04 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope. The catalog record notes: Metric O-RING, JIS P315.

The material holds up against hydraulic fluids, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

It sees regular use in agricultural equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H8.4X314.5 when ordering; the item is sold individually. Unit weight is approximately 68.696 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.