H90268 is an AS568-268 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 8.484 in (215.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.762 in (222.55 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
As a material, Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. This material stands up to propane and butane, greases and lubricants, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
Common environments for this compound include fluid power, automotive, and agricultural equipment.
Reference part number H90268 when ordering; the item is sold individually. Unit weight is approximately 8.712 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -268 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 8.484 inch (215.49 mm)
Actual Outside Diameter 8.762 inch (222.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity