How can I be sure sealing fittings are installed properly?

A Contractor checking the PVC-Coated Sealing Fitting Installation


When using Sealing Fittings in a Hazardous Location, how can I be certain that the plugs are installed properly?


Per NEC Code, 5 full threads of engagement are needed.  This is essential for a proper flame path and a safe installation.  Perma-Cote Sealing Fittings offer a patented P5SA™ validation system on sealing fittings that visually confirms the urethane-coated plug is correctly engaged the first time, every time.

The design offers visual validation that the plug has been installed correctly—all the installer needs to do is verify that the plug does not protrude beyond the PVC’s beveled edge.  This confirms that 5 full threads are engaged. If the plug sets above the beveled edge of the PVC, you will need to further tighten the plug in order to have 5 full threads of engagement.