The H50205 is an AS568-205 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 0.421 in (10.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.699 in (17.75 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.
Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Expect good resistance to petroleum-based oils, propane and butane, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.
It sees regular use in automotive, agricultural equipment, and construction equipment.
Order part number H50205, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -205 BLACK BUNA 50D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 0.421 inch (10.69 mm)
Actual Outside Diameter 0.699 inch (17.75 )
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity