APG stocks the H90231, an AS568-231 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 2.609 in (66.27 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.887 in (73.33 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. This material stands up to hydraulic fluids, many alcohols, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
Typical settings include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.
H90231 ships individually. Unit weight is approximately 3.055 g and nominal inside diameter is listed as 2 5/8 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description -231 BLACK BUNA 90D O-RING
uf_description2 0.139" (3.53MM) CS X 2.609" (66.27MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 2.609 inch (66.27 mm)
Actual_OD 2.887 inch (73.33 mm)
ProductCode Description O-Rings - Bulk - Commodity