H70263 is an AS568-263 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 7.234 in (183.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.512 in (190.8 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.
The material holds up against hydraulic fluids, petroleum-based oils, and greases and lubricants. Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.
It sees regular use in fluid power, automotive, and construction equipment.
H70263 ships individually. Unit weight is approximately 7.0319 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -263 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 7.234 inch (183.74 mm)
Actual Outside Diameter 7.512 inch (190.8 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity