1MM CS X 18MM ID BLACK BUNA 70D

H1X18 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 18 mm (0.709 in), a cross section of 1 mm (0.039 in), and an outside diameter of 20 mm (0.79 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 specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. It resists greases and lubricants, hydraulic fluids, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ketones or ozone and direct sunlight.

You will find this material specified across automotive, fluid power, and construction equipment.

Stocked as H1X18 and sold individually. Unit weight is approximately 0.0633 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.