Ordered as HSN90268, this is an AS568-268 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 8.484 in (215.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.762 in (222.55 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
The compound resists modern refrigerants, heat and oxidation, and ozone and weathering. HNBR (Hydrogenated Nitrile) delivers long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in esters or strong oxidizing acids.
Common environments for this compound include engine timing systems, oilfield and downhole equipment, and automotive air conditioning.
This item is sold individually under part number HSN90268. Nominal inside diameter is listed as 8 1/2 inch. Review your operating media and conditions against this specification before installation.
Description 568-268 HSN90 DURO ORINGS
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 8.484 inch (215.49 mm)
Actual Outside Diameter 8.762 inch (222.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium