5MM CS X 70MM ID BLACK BUNA 90D

H90M5X70 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 70 mm (2.756 in), a cross section of 5 mm (0.197 in), and an outside diameter of 80 mm (3.15 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum-based oils, many alcohols, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. 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 ketones or ozone and direct sunlight.

Typical settings include general industrial maintenance, automotive, and construction equipment.

This item is sold individually under part number H90M5X70. Unit weight is approximately 6.067 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.