3MM CS X 164.5MM ID BLACK BUNA 90D

H90M3X164.5 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 164.5 mm (6.476 in), a cross section of 3 mm (0.118 in), and an outside diameter of 170.5 mm (6.71 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is known for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. It resists many alcohols, water, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

Maintenance and OEM teams specify it across construction equipment, automotive, and hydraulic and pneumatic systems.

H90M3X164.5 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.