-444 BLACK BUNA 70D O-RING

Part number H70444 is an AS568-444 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 7.725 in (196.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.275 in (210.19 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum-based oils, propane and butane, and many alcohols. Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Maintenance and OEM teams specify it across automotive, fluid power, and hydraulic and pneumatic systems.

This item is sold individually under part number H70444. Unit weight is approximately 29.794 g and nominal inside diameter is listed as 7 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.