Case Study

Chloralkali & Chlorine Processing




Large Chloralkali and Chlorine Processor and supplier


This plant site has both FRP and lap joint nickel pipe flanges.

Challenges faced

Hired contractors assisting the customer during outages were over tightening and rupturing the PTFE cover of Garlock STRESS SAVER® 370 in nickel lap joints. STRESS SAVER® 370 is a discreet gasket molded to fit specific flange sizes. Other flange gasket seals were unreliable in FRP flanges due low bolt torque allowed. The plant is converting to be predominately nickel pipe systems. The primary motivation to consider a new gasket was the customer’s need to consolidate to the fewest number of gaskets that would be good in chloralkali process media, metal lap joint flanges and FRP flanges. The customer also desired a gasket that would come in sheet form, to give them the flexibility to produce any size and shape of gasket desired.

Operating Conditions

1. Media: Potassium hydroxide, Catholite
2. Temperature: 90 – 95 °C
3. Pressure: 50 to 70 psig
4. Size: 6” ring and full face gaskets

Solution and Benefits

GYLON EPIX® Style 3510 was selected for its ability to seal the customer’s flange types and compatibility with the range of chemical media found in chloralkali processes.

GYLON EPIX® 3510 was installed and provided leak free service after a trial period of one year, proving to be the ideal sealing solution for this application.

We answer your questions!

Please write to

How to find us

Garlock GmbH
Falkenweg 1
41468 Neuss


+49 2131 349-0


Garlock Global Website


Career Site Europe

Social Media