5MM CS X 190MM ID BLACK BUNA 90D

Ordered as H90M5X190, this is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 190 mm (7.48 in), a cross section of 5 mm (0.197 in), and an outside diameter of 200 mm (7.87 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against greases and lubricants, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

It sees regular use in fluid power, agricultural equipment, and hydraulic and pneumatic systems.

Order part number H90M5X190, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.