3.55MM CS X 18MM ID BLACK BUNA 70D

APG stocks the H3.55X18, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 18 mm (0.709 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 25.1 mm (0.99 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. This material stands up to many alcohols, propane and butane, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across construction equipment, general industrial maintenance, and agricultural equipment.

Order part number H3.55X18, sold individually. Unit weight is approximately 0.789 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.