3MM CS X 69.5MM ID BLACK BUNA 70D

Ordered as H3X69.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 69.5 mm (2.736 in), a cross section of 3 mm (0.118 in), and an outside diameter of 75.5 mm (2.97 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to hydraulic fluids, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include hydraulic and pneumatic systems, construction equipment, and fluid power.

Stocked as H3X69.5 and sold individually. Unit weight is approximately 1.9645 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.