568-469 HSN90 DURO ORINGS

The HSN90469 is an AS568-469 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 19.955 in (506.86 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 20.505 in (520.83 mm). This 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. The compound resists sour gas and amine inhibitors, modern refrigerants, and ozone and weathering. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Exposure to ketones or strong oxidizing acids will shorten service life.

Maintenance and OEM teams specify it across engine timing systems, automotive air conditioning, and heavy-duty powertrain.

This item is sold individually under part number HSN90469. Application requirements vary, so validate compatibility with your process conditions prior to installation.