568-037 GREEN HNBR (HSN) 70 ORINGS

APG stocks the HS70037, an AS568-037 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 2.489 in (63.22 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.629 in (66.78 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to petroleum oils and fuels, sour gas and amine inhibitors, and heat and oxidation. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for the oil resistance of nitrile with substantially better heat capability, excellent abrasion and tear strength. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Applications involving strong oxidizing acids or ketones call for a different compound.

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

Reference part number HS70037 when ordering; the item is sold individually. Nominal inside diameter is listed as 2 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.