568-474 GREEN HNBR (HSN) 70 ORINGS

The HS70474 is an AS568-474 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 24.94 in (633.48 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 25.49 in (647.45 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

It resists heat and oxidation, ozone and weathering, and modern refrigerants. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for excellent abrasion and tear strength, strong resistance to rapid gas decompression. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in strong oxidizing acids or chlorinated hydrocarbons.

You will find this material specified across heavy-duty powertrain, oilfield and downhole equipment, and automotive air conditioning.

Order part number HS70474, sold individually. Nominal inside diameter is listed as 25 inch. Check the compound against your process media, pressure and temperature before committing to a design.