568-159 GREEN HNBR (HSN) 70 ORINGS

Part number HS70159 is an AS568-159 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.987 in (126.67 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.193 in (131.9 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

HNBR (Hydrogenated Nitrile) is specified here for improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. The compound resists modern refrigerants, ozone and weathering, and petroleum oils and fuels. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Applications involving chlorinated hydrocarbons or ketones call for a different compound.

Typical settings include engine timing systems, automotive air conditioning, and commercial refrigeration.

HS70159 ships individually. Nominal inside diameter is listed as 5 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.