Ordered as H3X48, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 48 mm (1.89 in), a cross section of 3 mm (0.118 in), and an outside diameter of 54 mm (2.13 in). The 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. The material holds up against water, many alcohols, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in polar solvents or automotive brake fluid.
You will find this material specified across fluid power, automotive, and agricultural equipment.
Order part number H3X48, sold individually. Unit weight is approximately 1.338 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description 3MM CS X 48MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 54 mm (2.13 inch)
Actual_CS 3 mm (0.118 inch)
Actual_ID 48 mm (1.89 inch)
ProductCode Description O-Rings - Metric - Commodity