FST™ Foam Duct Sealant is a "closed cell foam", which is superior to "open cell" spray canned foams. The kit contains a cartridge filled with a two-part foam base, which is mixed in equal parts as it is pushed through 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 wetting and adhesion to metals, plastics, and concrete. A separate, reusable ratchet application tool is used to inject the foam.

FST™ Foam Duct Sealant is available in two cartridge sizes. FST-250 is used for 2-inch (50mm) or larger conduits and is available in a multi-use single-plunger caulking tube that uses a standard high-ratio caulking tool (TOOL-250).

FST™-MINI is used for 1.5-inch (38mm) and smaller conduits. It comes in a dual 50 ml cartridge with 1:1 ratio. TOOL-50-11 is needed to apply FST™-MINI. FST™ foam wets and adheres to metals, plastics, and concrete, and can seal ducts of different sizes, base materials, and shapes. It conforms around complex cable fill configurations. A kit contains everything required to install the duct block (application tools available separately).

Features

• Seal water, dirt, oil, gases, rodents or other contaminants out of conduit or duct. Protect your investment in cables and electronics
• Cured foam is strong, resilient and chemically resistant. It provides protection in adverse field conditions
• Can hold 22 feet water-head pressure over an extended period of time
• Withstands cable movement
• Foam expands and cures quickly even in the presence of water
• Two-part foam is mixed in nozzle as it is injected – no mixing required
• Packages are resealable
• Cured foam is semi-permanent and can be removed
• No known effects on common cable and wire jacketing compounds