568-342 HSN90 DURO ORINGS

The HSN90342 is an AS568-342 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 3.6 in (91.44 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.02 in (102.11 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists petroleum oils and fuels, modern refrigerants, 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, strong resistance to rapid gas decompression. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Applications involving ketones or chlorinated hydrocarbons call for a different compound.

You will find this material specified across engine timing systems, automotive air conditioning, and commercial refrigeration.

This item is sold individually under part number HSN90342. Unit weight is approximately 8.9936 g. Check the compound against your process media, pressure and temperature before committing to a design.