The U70136 is an AS568-136 clear Polyurethane (AU/EU) 70 Shore A O-Ring built to an inside diameter of 1.987 in (50.47 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.193 in (55.7 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The material holds up against abrasion and wear, extrusion under high pressure, and petroleum oils. That behavior comes from the compound itself: Polyurethane (AU/EU) is valued for exceptional abrasion resistance and long wear life in dynamic reciprocating service. Continuous operating temperature is published at -65°F (-53.9°C) to 200°F (93.3°C). Applications involving prolonged humidity at elevated temperature or acids and bases call for a different compound.
Maintenance and OEM teams specify it across hydraulic cylinders, high-pressure fluid power, and off-highway equipment.
U70136 ships individually. Nominal inside diameter is listed as 2 inch. Review your operating media and conditions against this specification before installation.
Description *568-136 URETHANE 70 DURO ORINGS
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.987 inch (50.47 mm)
Actual Outside Diameter 2.193 inch (55.7 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium