Perlast stem seals double operational life in ball valve


A leading Danish valve manufacturer supplying and servicing valves and instruments for control and measurement in industrial processes.


OEM experiencing problems with PTFE stem seals in a ball valve, moved to a Kalrez® perfluoroelastomer which became very brittle through heat ageing resulting in leakage, leading to high maintenance cycles and low life span for the valve and a loss of business/reputation for OEM.


PPE recommended the use of Perlast® G75B in various sized O-rings located around the ball valve stem, these were tested and approved by the OEM engineering team and end-user customer.


PPE seals increased the operational life of the ball valve by 100% by reducing the maintenance/overhauls from 2 times a year to 1 a year.

How can we help? Contact our chemical processing sealing experts to discuss your requirements, or start a discussion online.

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