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Gaskets Case Study: Live Loading Installation on Regen Gas Heater


SJP case study APAC0007 – Chesterton products – Chesterton Gaskets




​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​These specially-designed, high-strength springs deliver a reserve of elastic energy to each bolt, allowing them to maintain a constant load on the flange and gasket during normal operation, or during thermal cycles. Properly selected and installed, Chesterton’s 5505H Flange Disc Springs can provide dramatic improvements in leakage performance and service life.​

Products featured in the case study:

Chesterton 5505H is high strength and provides high-temperature flange sealing.


The customer experienced frequent leakage from the front and rear channel heads on two heat exchangers, specifically during startup and shutdown cycles.

The challenge had been persistent since the initial commissioning of the heat exchangers. Hot torquing of bolts required to reduce leakage.


Chesterton® 5505H Live Loading Springs, new gasket, 725 anti-seize and correct torque were proposed in April 2018 during a major turnaround.

80 springs x 4 flanges = 320 springs installed.

Installation at front channel head.


Client Reported

All leakage issues have been eliminated, therefore there is no release of hydrocarbon vapours, which has reduced the likelihood of severe hazards. Furthermore, hot torquing is no longer required, the customer experienced no loss of process vapour, and no downtime. Costs have dramatically reduced and safety has dramatically improved.

Installation using Hydraulic Torque Wrench.

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​.

Mentioned in the case study:

SJP Sealing Technology (S) Pte Ltd
Exclusive Distributor of Chesterton products – Singapore & Malaysia






® Registered trademark owned by A.W. Chesterton Company
Case Number APAC0007 – Issued 08/20

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