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Helicoid® Diaphragm Seals 
Helicoid diaphragm seals are designed as a protective attachment for use with gauges on other pressure responsive instruments such as recorders, switches, transducers, controllers and transmitters.  They physically separate the instrument from the process medium, but allow it to function normally under a number of adverse conditions such as corrosives, pulsation, and solids.

 

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Helicoid diaphragm seals
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