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Polywater® FST-250KIT1 Foam Duct Sealant


Lead Time: In Stock, Ready to Ship.

SKU: FST-250KIT1 Categories: ,

FST-250KIT1 includes:

  • 1 - 8.5-oz two-part FST™ Foam Sealant caulking tube (cat# FST-250)
  • 3 - mixing nozzles
  • 4 - 24" foam damming strips (cat# FST-DAM)
  • 1 - 12" abrasive strip
  • 1 - pair disposable gloves
  • 1 - positioning rod for foam dam)
  • 1 - pre-treating wipe (cat# HP-P158ID)
  • 1 - resealing cap
  • 1 - instruction sheet

A Foam Duct-Sealing System for 2-inch/50-mm or Larger Conduits

FST™ closed-cell duct sealant provides superior pressure-blocking power in the toughest environments. It stops methane and other gases to keep electrical systems intact. FST Duct Sealant is stronger, more chemically resistant, and cures 50 times faster than open-cell aerosol foams. The FST seal has excellent adhesion to PVC, rigid steel, EMT, IMC, fiberglass and polyethylene conduits. FST is a proven solution that has been used for years to protect switchgear, panels, riser poles, combiner boxes, meters, and all types of electrical and telecommunication apparatus. It creates a semi-permanent seal and is reenterable.

Product/Package Notes:

  1. Polywater FST is recommended for 2-inch (51 mm) or larger conduits.
  2. It comes in a multi-use single-plunger caulking tube that uses a standard high-ratio caulking tool (TOOL-250).
  3. For conduits smaller than 1.5 inches, the Polywater FST-MINI is recommended (Polywater® FST-MINI-1GPolywater® FST-MINI-B6Polywater® FST-MINI-B6G)
  4. The kit packages come with all the components needed to complete a proper seal.
  • Meets NEC Code Requirements: 2011 NEC Articles 225.27, 230.8, 300.5(G), 300.7 (A) on Raceway Seals, and 501.15 (B)(2). 
  • Reliable: Holds 22 feet (6.7 m) of water head pressure and up to 90-foot (27 m) surges. 
  • Seals Multiple Conduits: Can seal conduits of all sizes and is reenterable. 
  • Compatible: Use with a wide range of cable jacket and conduit materials.
  • Solves Critical Application: Class 1, Div 2, cold storage entrances approximate R-Value of 6.5/inch. 

Specifications and Applications:

Application: FST-250 is recommended for 2-inch (50 mm) or larger conduits. It comes in a multi-use single-plunger caulking tube. FST MINI is recommended for conduits less than 1.5 inches (40 mm).

Adhesion: Bonds to PVC, GRS, EMT, IMC, fiberglass, and PE conduits. Ducts can be reentered.

Codes: FST meets the requirements of the NESC Section 322 B4 and NESC Section 355 D; and 2008, 2011, 2014, and 2017 NEC conduit sealing code requirement Articles 225.27, 230.8, 300.5 (G), 300.7 (A) on Raceway Seals, and 501.15 (B)(2).

Attention: Due to varying interpretations of the NEC code, please consult the AHJ before use in Class 1, Div 2 hazardous locations.

FST Calculator
Weight 3 lbs
Dimensions 12 × 8 × 4 in

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