HSN (HNBR) 80 568-319

Part number HSN80319 is an AS568-319 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring 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). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists ozone and weathering, modern refrigerants, and heat and oxidation. HNBR (Hydrogenated Nitrile) is widely chosen for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Verify compatibility before use with chlorinated hydrocarbons or ketones.

Maintenance and OEM teams specify it across engine timing systems, oilfield and downhole equipment, and commercial refrigeration.

This item is sold individually under part number HSN80319. Unit weight is approximately 2.953 g and nominal inside diameter is listed as 1 1/16 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.