Ordered as H50034, this is an AS568-034 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 2.114 in (53.7 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.254 in (57.25 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.
As a material, Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. The compound resists many alcohols, hydraulic fluids, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in strong acids or automotive brake fluid.
You will find this material specified across hydraulic and pneumatic systems, fluid power, and construction equipment.
This item is sold individually under part number H50034. Nominal inside diameter is listed as 2 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -034 BLACK BUNA 50D O-RING
Actual Cross Section 0.07 inch (1.78 mm)
Actual Inside Diameter 2.114 inch (53.7 mm)
Actual Outside Diameter 2.254 inch (57.25 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity