568-453 HSN90 DURO ORINGS

Ordered as HSN90453, this is an AS568-453 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 11.975 in (304.17 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 12.525 in (318.14 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to sour gas and amine inhibitors, ozone and weathering, and petroleum oils and fuels. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for the oil resistance of nitrile with substantially better heat capability, excellent abrasion and tear strength. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C).

You will find this material specified across automotive air conditioning, heavy-duty powertrain, and commercial refrigeration.

Reference part number HSN90453 when ordering; the item is sold individually. Nominal inside diameter is listed as 12 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.