4MM CS X 30MM ID BLACK BUNA 70D

Ordered as H4X30, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 30 mm (1.181 in), a cross section of 4 mm (0.157 in), and an outside diameter of 38 mm (1.5 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to petroleum-based oils, propane and butane, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ketones.

It sees regular use in hydraulic and pneumatic systems, general industrial maintenance, and construction equipment.

This item is sold individually under part number H4X30. Unit weight is approximately 1.6551 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.