1MM CS X 2.5MM ID BLACK BUNA 90D

Part number H90M1X2.5 is a black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 2.5 mm (0.098 in), a cross section of 1 mm (0.039 in), and an outside diameter of 4.5 mm (0.18 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. It resists petroleum-based oils, propane and butane, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ketones are present.

Maintenance and OEM teams specify it across fluid power, agricultural equipment, and automotive.

Reference part number H90M1X2.5 when ordering; the item is sold individually. Unit weight is approximately 0.011 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.