2.5MM CS X 30MM ID BLACK BUNA 90D

Part number H90M2.5X30 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 30 mm (1.181 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 35 mm (1.38 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against greases and lubricants, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or polar solvents.

Maintenance and OEM teams specify it across fluid power, automotive, and hydraulic and pneumatic systems.

This item is sold individually under part number H90M2.5X30. Unit weight is approximately 0.67 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.