568-259 GREEN HNBR (HSN) 70 ORINGS

Ordered as HS70259, this is an AS568-259 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 6.234 in (158.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.512 in (165.4 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

It resists heat and oxidation, modern refrigerants, and ozone and weathering. HNBR (Hydrogenated Nitrile) is valued for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where strong oxidizing acids or esters are present.

Maintenance and OEM teams specify it across oilfield and downhole equipment, automotive air conditioning, and heavy-duty powertrain.

Reference part number HS70259 when ordering; the item is sold individually. Nominal inside diameter is listed as 6 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.