568-429 HSN90 DURO ORINGS

Ordered as HSN90429, this is an AS568-429 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 4.975 in (126.37 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.525 in (140.34 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) is specified here for improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. This material stands up to petroleum oils and fuels, ozone and weathering, and heat and oxidation. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with strong oxidizing acids or ketones.

You will find this material specified across automotive air conditioning, engine timing systems, and oilfield and downhole equipment.

Reference part number HSN90429 when ordering; the item is sold individually. Nominal inside diameter is listed as 5 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.