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PTFE Spring Energized Seal for Valve Stem
Description

It is generally used to seal the valve stem or support frame, pivot and packing. It is composed of filled PTFE and alloy springs. According to the corrosion of the medium, stainless steel springs can also be selected. This product is mainly used for high temperature over 200°C. It is necessary to add a back-up ring on the back to prevent extrusion when the  pressure reach 2500LB or higher.