Case Studies
Spring-Energised Seal (SES) Provides 4X Increase to MTBM in Plunger Pump
Challenge
Background
A customer uses a plunger pump to extract plant oil. Liquid carbon dioxide supplied to a customer’s pump was becoming contaminated. The OEM seal system was lasting only 2 months which was unacceptable to the customer. They wanted to maximize mean time between maintenance (MTBM) intervals and approached Chesterton for a better solution.
Plunger pump system.
Solution
Product
We proposed a Chesterton® Cantilever Spring Energised Seal (SES) 100 Series with an FDA-compliant UHMW-PE (AWC610) jacket and stainless steel spring, along with a 9K Backup Anti-extrusion Ring (AER) made from AWC630. The seal system is designed to offer lower friction performance and, thereby, smoother system actuation while allowing operation to 3,750 psi.
Chesterton 9K and SES100 Seal.
Results
4X Increase in MTBM
As a result of the SES 100 and 9K solution, system performance and seal life increased substantially. The system is used daily and service life increased to 8 months before seal changeout was required.
Chesterton SES 100.
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.
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EN602161. Issued 04/2025
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.