Water Stop Foam

FST 250


FST Duct Sealant
Water Block Foam Kit
Multi-Use, Quick-Setting
Two-Part, Foam-Base
Duct-Sealing System

  • Seal water, dirt, oil, gases, rodents out of conduit/duct or central office.
  • Deter copper cable thieves.
  • Strong, resilient and chemical resistant.
  • Provides superior protection in adverse field conditions.
  • Holds 22 feet water-head pressure over an extended period of time.
  • Tolerates cable movement.
  • Seals up to (5) 2″ (50mm) ducts. Saves money over single duct products.
  • Expands and cures quickly even when water is present. Seal ducts quickly & neatly.
  • No mixing or measuring. Two-part foam is mixed in nozzle as it is injected. Saves time.
  • Packages are re-sealable. No waste.
  • Removable
  • No known effects on common cable and wire jacketing compounds.

FST Duct Seal is a closed cell foam, which is superior to open cell spray foams. The kit contains a cartridge filled with a two-part foam base with a mixing nozzle. When mixed and injected, the foam expands and hardens, keeping water, acids, greases, gases, insects, and rodents, etc., out of the conduit. The foam has good adhesion to metals, plastics, and concrete. A separate, reusable ratchet application tool is used to inject the foam.