This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 630 mm (24.803 in), a cross section of 7 mm (0.276 in), and an outside diameter of 644 mm (25.35 in), catalogued under part number H7X630. It 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, the most widely specified general-purpose sealing elastomer. Expect good resistance to hydraulic fluids, propane and butane, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or strong acids will shorten service life.
Maintenance and OEM teams specify it across general industrial maintenance, automotive, and hydraulic and pneumatic systems.
This item is sold individually under part number H7X630. Unit weight is approximately 94.327 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description 7MM CS X 630MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 644 mm (25.35 inch)
Actual_CS 7 mm (0.276 inch)
Actual_ID 630 mm (24.803 inch)
ProductCode Description O-Rings - Metric - Commodity