1.9MM CS X 4.9MM ID BLACK BUNA 70D

Part number H1.9X4.9 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.9 mm (0.193 in), a cross section of 1.9 mm (0.075 in), and an outside diameter of 8.7 mm (0.34 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against water, many alcohols, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or automotive brake fluid are present.

You will find this material specified across automotive, fluid power, and hydraulic and pneumatic systems.

H1.9X4.9 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.