-055 BLACK BUNA 70D O-RING

Part number H70055 is an AS568-055 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 6.489 in (164.82 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 6.629 in (168.38 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) offers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The material holds up against water, propane and butane, 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, agricultural equipment, and general industrial maintenance.

Reference part number H70055 when ordering; the item is sold individually. Unit weight is approximately 1.6152 g and nominal inside diameter is listed as 6 31/64 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.