4MM CS X 109MM ID BLACK BUNA 70D

Ordered as H4X109, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 109 mm (4.291 in), a cross section of 4 mm (0.157 in), and an outside diameter of 117 mm (4.61 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. It resists many alcohols, greases and lubricants, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

Typical settings include construction equipment, hydraulic and pneumatic systems, and fluid power.

Reference part number H4X109 when ordering; the item is sold individually. Unit weight is approximately 5.5663 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.