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PTFE-lined diaphragm seals

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article image Wika’s PTFE lined diaphragm seals

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WIKA has released PTFE linings for diaphragm seals, suitable for hazardous applications. Due to its high resistance to chemicals and anti-adhesive properties, PTFE (polytetrafluorethylene) is often used in process instrumentation.

A new bonding method for diaphragm seals developed by Wika has succeeded in increasing the permanent temperature to +260°C and considerably reducing the surface resistance of the PTFE diaphragm by using a sophisticated conductive compound. As a result, pressure and differential pressure transmitters with the PTFE-lined diaphragm seals can now be used in hazardous areas.

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