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Static sealing upgrade for tire manufacturer



A tire manufacturer was experiencing leakage problems on their pneumatic tire building machine used for combining beads, carcas, and sidewalls. The air leaks led to misalignment, quality issues, and scrapped product.

Upon analysis, the PTFE static seals used on the floating piston head were found to have taken a compression set.

Soon after start-up, they began to leak and were replaced after an average of 1 month in service.

Products featured in this case study:

Chesterton 20KD face and static seal



Chesterton recommended a unique sealing solution that included an upgrade to hardware design and material. The equipment was modified to an optimum size sealing groove for the 20KD custom static seal.

  • 20KD – Continuous compression seal design for use in static applications and custom made for equipment dimensions, requiring no modifications
  • AWC 800 – Thermoset material has superior wear resistance versus conventional materials and has low compression set, enabling it to maintain sealing force for longer periods.

Tire building machine with PTFE static seals.

20KD – upgrade performance of conventional static seals.

Close up view of 20KD installed in hardware.


Improved Performance & Reliability

Although the initial acquisition cost of the Chesterton sealing solution was higher, the O-ring sealing upgrade showed a significant improvement in the equipment performance. The rebuild cycle was extended from an average of 1 month up to 3.5 months.

MTBR increased: 3.5X

About Us

Chesterton® is a world leader in helping process industry companies and manufacturers improve the reliability and efficiency of their rotating, stationary, and fluid power equipment platforms. We are known across a wide range of industries for our award-winning pump and valve sealing solutions, applications expertise, equipment maintenance and wear-prevention products, and knowledgeable hands-on local service. Chesterton product range includes mechanical seals, packing and gaskets, industrial lubricants and coatings.

® Registered trademark owned by A.W. Chesterton Company

Issued 06/2022. EN23728. Case Study 024 FP.

Technical data reflects results of laboratory tests and is intended to indicate general characteristics only. A.W. Chesterton Company disclaims all warranties expressed or implied, including warranties of merchantability and fitness for a particular purpose. Liability, if any, is limited to product replacement only. Any images contained herein are for general illustrative or aesthetic purposes only and are not intended to convey any instructional, safety, handling, or usage information or advice respecting any product or equipment. Please refer to relevant Safety Data Sheets, Product Data Sheets, and/or Product Labels for safe use, storage, handling, and disposal of products, or consult with your local Chesterton sales representative.

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