APG stocks the U70244, an AS568-244 clear Polyurethane (AU/EU) 70 Shore A O-Ring measuring an inside diameter of 4.234 in (107.54 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.512 in (114.6 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
The material holds up against petroleum oils, ozone, and impact and shock loading. That behavior comes from the compound itself: Polyurethane (AU/EU) offers very high tensile strength and load capacity, toughness that outperforms conventional rubber compounds. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C).
You will find this material specified across mining and heavy equipment, press and forming equipment, and off-highway equipment.
U70244 ships individually. 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.
description 568-244 URETHANE 70 DURO ORINGS
uf_description2 4.234" (107.54MM) ID X .139" (3.53MM)
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 4.234 inch (107.54 mm)
Actual_OD 4.512 inch (114.6 mm)
ProductCode Description O-Rings - Bulk - Premium