Instrument Nozzle Plug


Preferred Engineering Instrument Nozzle Plug uses passive compression and proven sealing technology utilized in many of our plug products. Our Nozzle Plugs are provided with silicone seals which are rated to 500 degrees Fahrenheit, and with a redundant face seal that is customizable to plant needs.  


  • Polished stainless steel structure is decontaminated easily.  

  • Designed to install with the Moisture Separator in place. 

  • Plug design includes Seismic calculations.  

  • Optional faceplate provides secondary seal designed to isolate the nozzle penetration welds on RPV wall.