Ordered as H5.7X69.6, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 69.6 mm (2.74 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 81 mm (3.19 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. This item is further identified as Metric O-RING, JIS P70.
This material stands up to hydraulic fluids, greases and lubricants, and propane and butane. Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ketones will shorten service life.
You will find this material specified across construction equipment, fluid power, and automotive.
Reference part number H5.7X69.6 when ordering; the item is sold individually. Unit weight is approximately 7.389 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description 5.7MM CS X 69.6MM ID BLACK BUNA 70D
Actual Outside Diameter 81 mm (3.19 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 69.6 mm (2.74 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity