-394 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-394 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 24.94 in (633.48 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 25.36 in (644.14 mm), catalogued under part number H70394. It compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. It resists greases and lubricants, petroleum-based oils, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or automotive brake fluid will shorten service life.

It sees regular use in fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

Order part number H70394, sold individually. Unit weight is approximately 53.8 g and nominal inside diameter is listed as 25 inch. 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.