The H50123 is an AS568-123 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 1.174 in (29.82 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.38 in (35.05 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Buna-N (Nitrile) is specified here for low compression set under sustained load, strong abrasion and tear resistance. This material stands up to many alcohols, greases and lubricants, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or ketones.
It sees regular use in agricultural equipment, fluid power, and general industrial maintenance.
This item is sold individually under part number H50123. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -123 BLACK BUNA 50D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.174 inch (29.82 mm)
Actual Outside Diameter 1.38 inch (35.05 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity