APG stocks the U90381, an AS568-381 clear Polyurethane (AU/EU) 90 Shore A O-Ring with an inside diameter of 11.975 in (304.17 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 12.395 in (314.83 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
The compound resists extrusion under high pressure, petroleum oils, and ozone. Polyurethane (AU/EU) is known for outstanding extrusion resistance at elevated pressure and toughness that outperforms conventional rubber compounds. Service temperature is rated from -65°F (-53.9°C) through 200°F (93.3°C). Applications involving ketones or hot water and steam call for a different compound.
You will find this material specified across construction machinery, high-pressure fluid power, and mining and heavy equipment.
Order part number U90381, sold individually. Review your operating media and conditions against this specification before installation.
Description 568-381 URETHANE 90 ORINGS -PREM GRADE
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 11.975 inch (304.17 mm)
Actual Outside Diameter 12.395 inch (314.83 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium