Polymer Labyrinth Seal (PLS)
The Chesterton Polymer Labyrinth Seal (PLS) is a non-contact bearing seal designed to protect pumps, motors, gearboxes, and other rotating equipment in splash-lubricated environments. Its three-piece design—including a rotor, stator, and integrated valve—effectively blocks contaminants while retaining lubrication, helping extend machinery service life.
Made from a proprietary polymer, the PLS operates reliably at temperatures from –50°C to 60°C and shaft speeds up to 6,000 feet per minute (30.5 m/s). Its durable, non-sparking construction ensures consistent performance in demanding industries such as pulp and paper, petrochemical, and wastewater treatment.
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Product Features
✔ High performance, non-contact design eliminates fretting caused by lip seals
✔ Keeps lubrication in and seals out external contamination
✔ Unitized design and durable, non-sparking material provide easy, reliable installation
✔ Available in a variety of configurations to meet plant- wide equipment needs
✔ IP56 (third party certification) designed to be resistant to dust and water
Technical Data ↓
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-60 °F ( -50 °C )
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250 °F ( 60 °C )
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30.5 m/s ( 6000 fpm )
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0.03 mm ( 0.75 in )
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Temperature for AWC800 material