568-253 GREEN HNBR (HSN) 70 ORINGS

APG stocks the HS70253, an AS568-253 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 5.359 in (136.12 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.637 in (143.18 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The compound resists sour gas and amine inhibitors, modern refrigerants, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) offers excellent abrasion and tear strength, long service life in refrigerant and oilfield duty. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Verify compatibility before use with strong oxidizing acids or esters.

You will find this material specified across automotive air conditioning, oilfield and downhole equipment, and engine timing systems.

Stocked as HS70253 and sold individually. Nominal inside diameter is listed as 5 3/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.