568-152 BLACK HNBR HSN70 O-Ring

Ordered as HSN70152, this is an AS568-152 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.237 in (82.22 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.443 in (87.45 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) is specified here for improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. It resists petroleum oils and fuels, modern refrigerants, and sour gas and amine inhibitors. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Exposure to esters or chlorinated hydrocarbons will shorten service life.

You will find this material specified across engine timing systems, oilfield and downhole equipment, and commercial refrigeration.

Reference part number HSN70152 when ordering; the item is sold individually. Unit weight is approximately 1.7265 g and nominal inside diameter is listed as 3 1/4 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.