Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
PU O Ring Hydraulic Polyurethane Seal 69.44x3.53
- Category: O-Rings
- Temperature: -40℃ ~ 90℃
- Material: Polyurethane (PU)
- Color: Yellow
- Hardness: 90±5 Shore A
- Description: Widely used in hydraulic systems, hydraulic cylinders, pneumatic equipment and heavy duty machinery sealing.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1.Discription
This PU O-Ring is made of premium polyurethane material with excellent high pressure resistance, anti-extrusion performance and outstanding wear resistance. It has better mechanical strength and anti-tearing property than normal NBR O-rings. Widely applied to hydraulic cylinders, hydraulic systems, construction machinery and heavy duty industrial sealing conditions. Good oil resistance to hydraulic oil and mineral oil.
2.How does an O-ring works?
Schematic showing how an O-ring seals in the gland. The O-ring deforms as a response to pressure to create the seal line.
3.O-Ring Material Comparison: NBR / PU / FKM
| Material | Oil Resistance | Wear & High Pressure | Heat Resistance | Chemical Resistance | Application | Temperature Range |
| NBR | Excellent | Average | Good ≤120℃ | Average | General purpose sealing, pneumatic, hydraulic | -30℃~120℃ |
| PU | Excellent | Superior anti-extrusion & wear resistant | Poor ≤90℃ | Poor | Hydraulic cylinders, heavy duty high pressure | -40℃~90℃ |
| FKM | Excellent | Average | Excellent ≤200℃ | Excellent | High temperature, chemical, fuel industry | -20℃~200℃ |
4.O-Ring dimensions
About the Dimensions, you can download it through below link.
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