HSN (HNBR) 80 568-344

Part number HSN80344 is an AS568-344 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring with an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) is valued for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. The compound resists sour gas and amine inhibitors, ozone and weathering, and heat and oxidation. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or ketones are present.

Common environments for this compound include heavy-duty powertrain, automotive air conditioning, and commercial refrigeration.

Order part number HSN80344, sold individually. Unit weight is approximately 9.7025 g and nominal inside diameter is listed as 3 7/8 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.