568-319 HSN90 DURO ORINGS

Ordered as HSN90319, this is an AS568-319 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 1.037 in (26.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.457 in (37.01 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

It resists petroleum oils and fuels, heat and oxidation, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is widely chosen for strong resistance to rapid gas decompression, excellent abrasion and tear strength. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Exposure to strong oxidizing acids or ketones will shorten service life.

You will find this material specified across commercial refrigeration, automotive air conditioning, and engine timing systems.

This item is sold individually under part number HSN90319. Nominal inside diameter is listed as 1 1/16 inch. 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.