For specific applications where crevice corrosion is a concern, Teadit® 913M-CMP is a superior choice. This design is based on an ASME B16.20 spiral wound, but with a camprofiled Monel® inner ring. The inner ring can even be sized to the bore. Typical application is for HF Alkylation Service, however, different metallurgies can be selected for superior corrosion protection in multiple conditions.
Flexible Graphite (FG) and Expanded PTFE (ePTFE) may be selected for filler material in the spiral wound portion. For the camprofiled inner ring, standard 0.020” (0.5 mm) facing is utilized, where FG is selected for the covering material. To enhance crevice corrosion protection, 1/16” is utilized, where ePTFE is selected.
Typical NPS/Pressure Class applications are for Class 150 and Class 300 assemblies.
A PTFE manufacturing facility was experiencing leaks on an FEP Extruder that was originally designed to utilize a metal reinforced compressed asbestos gasket.
ETP Copper Process Case History
A metal manufacturer was looking for a replacement for asbestos compression packing.
CMS Plant Case History
A chemical plant was having issues with skived virgin PTFE gaskets failing in a heat exchanger application.
2774 Harsh Chemicals Case History
A customer was using a PTFE packing from another manufacture in an auger conveyor system.
Teadit 2773 for Wastewater Treatment
A wastewater facility was utilizing a graphite packing in their pumps and experiencing numerous issues (shaft scoring, short run duration, constant retightening, etc.).
Pulp & Paper
A pulp and paper mill was having issues with microcellular PTFE in the liquor lines of their digester process.
Bromine Manufacturing Case History
A chemical processing facility was utilizing PTFE envelope style gaskets on a circulation heater.
Teadit 946 Camprofile for Water Treatment
An environmental engineering and design company was working with a major pipe, valve, and fitting supplier to place butterfly valves into a specialized water decontamination unit.