HSN (HNBR) 80 568-270

APG stocks the HSN80270, an AS568-270 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring with an inside diameter of 8.984 in (228.19 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.262 in (235.25 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to modern refrigerants, petroleum oils and fuels, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is widely chosen for improved ozone and weathering resistance over standard nitrile, long service life in refrigerant and oilfield duty. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Applications involving strong oxidizing acids or ketones call for a different compound.

Typical settings include heavy-duty powertrain, automotive air conditioning, and oilfield and downhole equipment.

Stocked as HSN80270 and sold individually. Nominal inside diameter is listed as 9 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.