4MM CS X 171MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 171 mm (6.732 in), a cross section of 4 mm (0.157 in), and an outside diameter of 179 mm (7.05 in), catalogued under part number H4X171. It delivers dependable bidirectional sealing in a compact groove envelope.

It resists hydraulic fluids, petroleum-based oils, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) delivers low compression set under sustained load, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

Typical settings include construction equipment, automotive, and agricultural equipment.

Stocked as H4X171 and sold individually. Unit weight is approximately 8.438 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.