4MM CS X 390MM ID BLACK BUNA 70D

H4X390 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 390 mm (15.354 in), a cross section of 4 mm (0.157 in), and an outside diameter of 398 mm (15.67 in). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to greases and lubricants, hydraulic fluids, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

Typical settings include automotive, fluid power, and general industrial maintenance.

Reference part number H4X390 when ordering; the item is sold individually. Unit weight is approximately 18.996 g. Review your operating media and conditions against this specification before installation.