568-321 GREEN HNBR (HSN) 70 ORINGS

Part number HS70321 is an AS568-321 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.162 in (29.51 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.582 in (40.18 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

HNBR (Hydrogenated Nitrile) is specified here for long service life in refrigerant and oilfield duty, oil resistance of nitrile with substantially better heat capability. The material holds up against sour gas and amine inhibitors, heat and oxidation, and modern refrigerants. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Applications involving strong oxidizing acids or ketones call for a different compound.

Common environments for this compound include oilfield and downhole equipment, heavy-duty powertrain, and engine timing systems.

Reference part number HS70321 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.