Teflon Lip Seal
Teflon lip seals are a form of seal comprised of a Teflon ring or lip meant exclusively for closing rotating shafts. They are also called the PTFE lip seal.
Ideally, PTFE lip seals are the perfect alternative in high-speed applications that require chemically inert, self-cleaning, non-sticky, and thermal-resistant sealing.
Advantages of Teflon Lip Seal
The following are the benefits of the Teflon lip seal, making it ideal for its applications:
- Withstanding speeds of Teflon lip seal is up to 30 m/s
- Capable of withstanding 3.5 MPa of pressure
- Substantial chemical resistance
- Resists dry running
- Has a high temperature of operation range, from -95 to +480 °F to +70 to +250 °C
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Limitations of PTFE Lip Seal
- Teflon lip seal is more prone to runout situations, misalignment, and failure since they are less elastic.
- The irregularity widens the extruded gap on one side. If there is significant pressure present, this might be damaging.
PTFE Lip Seal Installation
Installation of a Teflon lip seal requires the attention of both the end users and engineers. The shaft must be protected from burrs from harm and sharp edges since the Teflon lip seal is less elastic.
Choosing the right Teflon lip seal helps minimize issues associated with installation. If the application requires a component design with significant interference, then a tool for installation should be considered.
Tools for installation provide optimum seal-to-shaft alignment and guard against seal damage from keyways, splines, and shafts lacking a leading-in chamfer.
Applications of Teflon Lip Seal
The following are the uses of Teflon lip seals:
- Oil and gas – they are used in valves, pumps, and compressors.
- Aerospace – they are employed in crucial applications like fuel and fuel delivery and hydraulic systems.
- Food and beverage – Teflon lip seal is utilized to avoid contamination and maintain the highest standards of hygiene in the machinery used to produce food and beverages.
- Automotive – It’s used in power steering, suspension, and engine and transmission systems.
- Medical devices – They are used in valves, pumps, and compressors.
