pipe integrity

Plidco Flange Repair Ring

The PLIDCO® Flange+Repair Ring fits over leaking flange, studs/nuts down to create a seal around the circumference. The ring comes with button-head fittings, which allows you to pump sealant to seal flange studs/nuts for a complete seal. Flange+Repair rings are available from stock in standard Flange sizes 11⁄2” to 12” 150 lb ANSI through 600 lb ANSI. Larger, special sizes and higher pressures available upon request.

Close block


  • Patented steel GirderRings hold seals in place and protect them from displacement and damage during installation.
  • No drilling required.
  • Injected sealant seals leaking flange studs/nuts.
  • Installation can be done when line is operational.
  • Safe and easy installation.
  • Proven track record of over 55 years.
  • Complete repair kits are available that include sealant gun and sealant.
  • Can be installed by your own maintenance personnel.
  • Can be reconditioned and used again.
  • D.O.T. Training is available.