568-145 GREEN HNBR (HSN) 70 ORINGS

Part number HS70145 is an AS568-145 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 2.55 in (64.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.756 in (70 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) delivers improved ozone and weathering resistance over standard nitrile, long service life in refrigerant and oilfield duty. This material stands up to modern refrigerants, ozone and weathering, and sour gas and amine inhibitors. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). 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 commercial refrigeration.

This item is sold individually under part number HS70145. Nominal inside diameter is listed as 2 9/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.