Round Polyurethane O Ring Performance
Abrasion & Wear Resistance
The polyurethane material resists surface wear during repeated contact, making the O Ring suitable for sealing points exposed to mechanical movement.
Tear Resistance
PU provides good resistance to tearing during installation and operation, helping protect the O Ring when passing over mating surfaces or groove edges.
Elastic Recovery
After compression, the polyurethane material can recover its original shape, helping maintain contact between the O Ring and the mating surfaces during operation.
Round Polyurethane O Ring Size & Tolerance
- Inside Diameter (ID)
The inside diameter is produced according to the specified shaft or mating component dimensions to achieve the required installation fit.
- Cross-Section Size
The O Ring cross section is available in different diameters to correspond with the sealing groove and compression space.
- Dimensional Tolerance
Critical dimensions can be controlled according to the applicable drawing or customer specification, supporting consistent installation across production batches.
Custom Polyurethane O Ring Manufacturing
Non-Standard Sizes
Custom inside diameters and cross-section dimensions can be produced when standard O Ring sizes do not match the customer's sealing structure.
Application-Specific Specifications
Material, hardness, color, dimensional tolerance, and other product requirements can be incorporated into the production specification.
Drawing & Sample Based Production
Chaoyue can develop customized Round Polyurethane O Rings from customer drawings, existing samples, or component dimensions for OEM and repeat production.
FAQ
Can a polyurethane O Ring be used for both static and dynamic sealing?
Yes, depending on the PU compound, groove design, pressure, movement speed, and operating conditions. For reciprocating or rotating applications, the sealing system should be evaluated specifically for dynamic movement.
How should I choose the correct O Ring cross-section?
The cross section should correspond to the available groove dimensions and required compression. Using an excessively thick or thin O Ring can affect installation and sealing behavior.
Can PU O Rings be used in hydraulic cylinders?
Yes. Polyurethane O Rings are commonly considered for hydraulic sealing components where abrasion resistance and mechanical strength are required. The hydraulic fluid, pressure, temperature, and movement conditions should be confirmed before selection.
