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568-421 URETHANE 70 DURO ORINGS

Urethane O-Ring, 3.975 in ID x 0.275 CS, 70A, Clear, -65 to 200°F

Status
Out of Stock
Est. Ship Date
21 Oct 2026
Material
Urethane
Dash Size
421
Durometer
70 Shore A
Cross Section Type
Round
Color
Clear
Minimum Temperature
-65°F (-53.9°C)
Maximum Temperature
200°F (93.3°C)
Nominal Cross Section
1/4 inch
Nominal Inside Diameter
4 inch
Nominal Outside Diameter
4 1/2 inch
Unit of Measure
EA
SKU:
U70421

Product Specification

-
U70421 is an AS568-421 clear Polyurethane (AU/EU) 70 Shore A O-Ring built to an inside diameter of 3.975 in (100.97 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.525 in (114.94 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Polyurethane (AU/EU) is known for very high tensile strength and load capacity, toughness that outperforms conventional rubber compounds. This material stands up to impact and shock loading, petroleum oils, and ozone. Rated temperature range runs from -65°F (-53.9°C) to 200°F (93.3°C) in continuous service. It should not be specified for service in hot water and steam or ketones.

Typical settings include high-pressure fluid power, press and forming equipment, and hydraulic cylinders.

Order part number U70421, sold individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
U70421
Description
568-421 URETHANE 70 DURO ORINGS
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
3.975 inch (100.97 mm)
Actual Outside Diameter
4.525 inch (114.94 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6006
Product Category
O-Rings - Bulk - Premium