568-388 HSN90 DURO ORINGS

Part number HSN90388 is an AS568-388 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 18.953 in (481.41 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 19.373 in (492.07 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

It resists heat and oxidation, petroleum oils and fuels, and modern refrigerants. HNBR (Hydrogenated Nitrile) offers long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with ketones or chlorinated hydrocarbons.

It sees regular use in commercial refrigeration, oilfield and downhole equipment, and automotive air conditioning.

HSN90388 ships individually. Nominal inside diameter is listed as 19 inch. Review your operating media and conditions against this specification before installation.