5.7MM CS X 459.3MM ID BLACK BUNA 70D

Ordered as H5.7X459.3, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 459.3 mm (18.083 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 470.7 mm (18.53 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: Metric O-RING, JIS G460.

It resists petroleum-based oils, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or strong acids will shorten service life.

It sees regular use in hydraulic and pneumatic systems, fluid power, and general industrial maintenance.

Stocked as H5.7X459.3 and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.