4MM CS X 99MM ID BLACK BUNA 70D

Ordered as H4X99, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 99 mm (3.898 in), a cross section of 4 mm (0.157 in), and an outside diameter of 107 mm (4.21 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, low compression set under sustained load. Expect good resistance to greases and lubricants, many alcohols, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

Common environments for this compound include general industrial maintenance, fluid power, and hydraulic and pneumatic systems.

This item is sold individually under part number H4X99. Unit weight is approximately 5.024 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.