3MM CS X 18.5MM ID BLACK BUNA 70D

APG stocks the H3X18.5, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 18.5 mm (0.728 in), a cross section of 3 mm (0.118 in), and an outside diameter of 24.5 mm (0.96 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) offers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The material holds up against many alcohols, greases and lubricants, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid.

You will find this material specified across construction equipment, general industrial maintenance, and agricultural equipment.

Reference part number H3X18.5 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.