5.7MM CS X 239.3MM ID BLACK BUNA 70D

Ordered as H5.7X239.3, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 239.3 mm (9.421 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 250.7 mm (9.87 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. Source specification: Metric O-RING, JIS G240.

The compound resists propane and butane, many alcohols, and hydraulic fluids. Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or ketones are present.

Common environments for this compound include agricultural equipment, automotive, and construction equipment.

This item is sold individually under part number H5.7X239.3. Unit weight is approximately 24.044 g. Review your operating media and conditions against this specification before installation.