-121 BLACK BUNA 50D O-RING

H50121 is an AS568-121 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 1.049 in (26.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.255 in (31.88 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Expect good resistance to water, petroleum-based oils, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving strong acids or polar solvents call for a different compound.

Common environments for this compound include fluid power, construction equipment, and hydraulic and pneumatic systems.

Order part number H50121, sold individually. Nominal inside diameter is listed as 1 1/16 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.