568-348 GREEN HNBR (HSN) 70 ORINGS

Part number HS70348 is an AS568-348 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.35 in (110.49 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.77 in (121.16 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to modern refrigerants, ozone and weathering, and heat and oxidation. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is widely chosen for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. It should not be specified for service in strong oxidizing acids or esters.

It sees regular use in engine timing systems, heavy-duty powertrain, and commercial refrigeration.

Stocked as HS70348 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design.