Jackmoon Triplex Duct Plugs

Triplex duct plugs are split plugs for sealing around, organizing, and supporting up to three subducts, pipes, or cables.

The plugs are designed for use in round openings such as conduits, conduit fittings, and core-drilled wall penetrations.

Effective long-term water-tight and air-tight seals, these products also prevent mud, backfill, and slurry from entering handholes, manholes, and buildings during the construction process. The service life of cable, splices, manhole hardware, and electronics can be increased when contact with moisture is reduced. Flooded underground structures are accessed more quickly when they are isolated from the ingress of water, mud, and slurry.


  • Split design for retrofitting without disassembly
  • Anchor and organize subducts or multiple duct systems
  • Eliminate duct-edge abrasion to cables
  • Expandable gasket allows for expansion and contraction of cables or subducts without leakage
  • Excellent for supporting cables at the tops of risers