The H50433 is an AS568-433 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 5.475 in (139.07 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.025 in (153.04 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. It resists many alcohols, hydraulic fluids, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or polar solvents are present.
Maintenance and OEM teams specify it across agricultural equipment, automotive, and general industrial maintenance.
Order part number H50433, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -433 BLACK BUNA 50D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.475 inch (139.07 mm)
Actual Outside Diameter 6.025 inch (153.04 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity