2MM CS X 19MM ID BLACK BUNA 90D

Ordered as H90M2X19, this is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 19 mm (0.748 in), a cross section of 2 mm (0.079 in), and an outside diameter of 23 mm (0.91 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists greases and lubricants, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ketones or ozone and direct sunlight.

You will find this material specified across hydraulic and pneumatic systems, construction equipment, and fluid power.

Order part number H90M2X19, sold individually. Unit weight is approximately 0.26 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.