568-443 GREEN HNBR (HSN) 70 ORINGS

Ordered as HS70443, this is an AS568-443 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 7.475 in (189.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.025 in (203.84 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

HNBR (Hydrogenated Nitrile) is specified here for excellent abrasion and tear strength, oil resistance of nitrile with substantially better heat capability. The compound resists modern refrigerants, heat and oxidation, and ozone and weathering. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in ketones or chlorinated hydrocarbons.

It sees regular use in commercial refrigeration, engine timing systems, and heavy-duty powertrain.

Order part number HS70443, sold individually. Nominal inside diameter is listed as 7 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.