1.8MM CS X 4.5MM ID BLACK BUNA 70D

H1.8X4.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 4.5 mm (0.177 in), a cross section of 1.8 mm (0.071 in), and an outside diameter of 8.1 mm (0.32 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. This material stands up to water, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in polar solvents or ketones.

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

Order part number H1.8X4.5, sold individually. Unit weight is approximately 0.061 g. 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.