Part number HS70266 is an AS568-266 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 7.984 in (202.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.262 in (209.85 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Expect good resistance to ozone and weathering, sour gas and amine inhibitors, and petroleum oils and fuels. HNBR (Hydrogenated Nitrile) is specified for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. It should not be specified for service in ketones or strong oxidizing acids.
You will find this material specified across heavy-duty powertrain, oilfield and downhole equipment, and automotive air conditioning.
Reference part number HS70266 when ordering; the item is sold individually. Nominal inside diameter is listed as 8 inch. Review your operating media and conditions against this specification before installation.
description 568-266 GREEN HNBR (HSN) 70 ORINGS
uf_description2 7.984" (202.79MM) ID X .139" (3.53MM)
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 7.984 inch (202.79 mm)
Actual_OD 8.262 inch (209.85 mm)
ProductCode Description O-Rings - Bulk - Premium