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
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.234 inch (107.54 mm)
Actual Outside Diameter 4.512 inch (114.6 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium