568-388 GREEN HNBR (HSN) 70 ORINGS

APG stocks the HS70388, an AS568-388 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring 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 creates a positive seal at flange, piston and rod interfaces without added hardware.

Expect good resistance to heat and oxidation, petroleum oils and fuels, and ozone and weathering. HNBR (Hydrogenated Nitrile) offers long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

Maintenance and OEM teams specify it across automotive air conditioning, commercial refrigeration, and engine timing systems.

This item is sold individually under part number HS70388. Nominal inside diameter is listed as 19 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.