3MM CS X 7MM ID BLACK BUNA 70D

The H3X7 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 7 mm (0.276 in), a cross section of 3 mm (0.118 in), and an outside diameter of 13 mm (0.51 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to propane and butane, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or ozone and direct sunlight.

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

Reference part number H3X7 when ordering; the item is sold individually. Unit weight is approximately 0.284 g. Review your operating media and conditions against this specification before installation. 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.