6MM CS X 66MM ID BLACK BUNA 70D

Ordered as H6X66, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 66 mm (2.598 in), a cross section of 6 mm (0.236 in), and an outside diameter of 78 mm (3.07 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. The compound resists water, many alcohols, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and automotive.

Order part number H6X66, sold individually. Unit weight is approximately 8.19 g. Check the compound against your process media, pressure and temperature before committing to a design. 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.