Chesterton Polymer Labryinth Seal (PLS)

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Chesterton PLS—Polymer Labyrinth Seal
Unitized, Non-Contacting Seal for Bearing Protection

  

​​​​​Bronze Award Winner: Plant Engineering's 2016 Product of the Year​ Award in the Fluid Handling category

Made from Chesterton’s proprietary polymer material technology, the Chesterton, patent-pending Polymer Labyrinth Seal (PLS) is a non-contact bearing seal designed to provide protection for pumps, motors, gearboxes, and other rotating equipment in splash applications. The unique design​n eliminates fretting caused by conventional lip seals and hel​ps increase bearing and gearbox life by extending the mean time between equipment repairs.

The design also incorporates a built-in valve, activated by shaft rotation, which engages during shutdown periods to create a positive seal during idle time—​blocking the ingress of external contaminants from entering the housing.

Available with same-day shipment to minimize downtime and associated costs.​

Installation Instructions (English)
Product Datasheet (English)

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
Same-day shipment availability, minimizing downtime and associated costs
Standard sizes available for popular equipment; custom sizes available upon request
IP56 (third party certification) designed to be resistant to dust and water
​​
​Materials (designation)Size Range mm (inch)Temperature ° C (° F)Speed *m/s (ft/min)Eccentricity mm (inch)
Polymer Labyrinth Seal (EU) AWC 80025 to 500.8 (1 to 20)-40 to 93 (-40 to 200)30.5 (6000)0.75 (0.030)
​​

*Contact engineering for speeds beyond these limits

 

 

Product Datasheet - PLS (English) PDFhttp://chestertondocs.chesterton.com/RotatingPolymerSeals/EN23145_23145_Labyrinth_Seal_PDS_Rev.pdfProduct Datasheet - PLS (English) PDFpdf
Product Datasheet - PLS (Espanol) PDFhttp://chestertondocs.chesterton.com/RotatingPolymerSeals/ES23145_23145_Labyrinth_Seal_PDS.pdfProduct Datasheet - PLS (Espanol) PDFpdf
Product Datasheet - PLS (Portuguese) PDFhttp://chestertondocs.chesterton.com/RotatingPolymerSeals/PT23145_23145.05_Polymer_Labyrinth_PDS_Rev.pdfProduct Datasheet - PLS (Portuguese) PDFpdf
Product Datasheet - PLS (Italiano) PDFhttp://chestertondocs.chesterton.com/RotatingPolymerSeals/IT23145_23145.04_Polymer_Labyrinth_PDS_Rev.pdfProduct Datasheet - PLS (Italiano) PDFpdf
Product Datasheet - PLS (German) PDFhttp://chestertondocs.chesterton.com/RotatingPolymerSeals/DE23145_23145.03_Polymer_Labyrinth_PDS.pdfProduct Datasheet - PLS (German) PDFpdf

 

 

Installation Instructions: Chesterton Polymer Labryinth Seal - PLS (English)http://chestertondocs.chesterton.com/RotatingPolymerSeals/EN88818_PolymerLabyrinthSeal_INST.pdfInstallation Instructions: Chesterton Polymer Labryinth Seal - PLS (English)pdf