Ordered as H4X23, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 23 mm (0.906 in), a cross section of 4 mm (0.157 in), and an outside diameter of 31 mm (1.22 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. It resists hydraulic fluids, greases and lubricants, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in construction equipment, automotive, and fluid power.
Stocked as H4X23 and sold individually. Unit weight is approximately 1.305 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description 4MM CS X 23MM ID BLACK BUNA 70D
Actual Outside Diameter 31 mm (1.22 inch)
Actual Cross Section 4 mm (0.157 inch)
Actual Inside Diameter 23 mm (0.906 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity