Part number H5X19 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 19 mm (0.748 in), a cross section of 5 mm (0.197 in), and an outside diameter of 29 mm (1.14 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.
It resists many alcohols, petroleum-based oils, and greases and lubricants. Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ketones or automotive brake fluid.
It sees regular use in construction equipment, fluid power, and hydraulic and pneumatic systems.
Stocked as H5X19 and sold individually. Unit weight is approximately 1.8452 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.
description 5MM CS X 19MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 29 mm (1.14 inch)
Actual_CS 5 mm (0.197 inch)
Actual_ID 19 mm (0.748 inch)
ProductCode Description O-Rings - Metric - Commodity