Part number H7X149 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 149 mm (5.866 in), a cross section of 7 mm (0.276 in), and an outside diameter of 163 mm (6.42 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. This material stands up to petroleum-based oils, greases and lubricants, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving automotive brake fluid or strong acids call for a different compound.
You will find this material specified across fluid power, construction equipment, and automotive.
Reference part number H7X149 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.
Description 7MM CS X 149MM ID BLACK BUNA 70D
Actual Outside Diameter 163 mm (6.42 inch)
Actual Cross Section 7 mm (0.276 inch)
Actual Inside Diameter 149 mm (5.866 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity