3MM CS X 19MM ID BLACK BUNA 90D

Ordered as H90M3X19, 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 3 mm (0.118 in), and an outside diameter of 25 mm (0.98 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against water, petroleum-based oils, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.

Common environments for this compound include fluid power, construction equipment, and agricultural equipment.

H90M3X19 ships individually. Unit weight is approximately 0.654 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.