Polywater FST Foam Duct Sealant | Kits & Cartridges | 50–250 ml
Polywater FST Foam Duct Sealant — Product Overview
Polywater FST Foam Duct Sealant is a closed-cell expanding foam system engineered to create durable airtight and watertight seals inside electrical and telecom conduits. The two-part formula expands to fill conduit space, blocks moisture and gases, and cures into a high-strength permanent seal. FST installs using a standard high-ratio caulking gun and requires no external water or humidity to cure.
FST is re-enterable for future cable additions and is fully compatible with PVC, HDPE, RGS, EMT, IMC, and a wide range of cable jackets. Designed for harsh indoor/outdoor environments, it meets global electrical code requirements for duct sealing and raceway protection.
Key Features
- Airtight & Watertight Seal: Holds 22 ft of continuous water head with surge protection up to 90 ft
- Re-Enterable Design: Sealant can be removed cleanly for future cable installations
- Wide Compatibility: Works with PVC, RGS, PE, EMT, IMC, and most cable jacket materials
- Fire & Code Compliant: Meets UL 94 HBF and NEC Class 1 Division 2 requirements
- Durable Performance: Withstands −20°F to 200°F (−30°C to 120°C) and resists gasoline, oils, and dilute acids
- High Mechanical Strength: Compressive strength of 145 psi; tensile strength of 120 psi
Specifications
- Available Sizes: FST-250 (8.5-oz / 240-g) for conduits ≥2"; FST-MINI (50-ml) for conduits <2"
- Water Resistance: 22 ft continuous head; 90 ft surge
- Temperature Range: −20°F to 200°F (−30°C to 120°C)
- Chemical Resistance: Resists oils, gasoline, dilute acids, and unsaturated hydrocarbons
- NSF Certification: Certified for nonfood compounds (S2)
Applications
- Electrical Conduit Sealing: Creates long-term airtight and watertight raceway seals
- Mission-Critical Protection: Ideal for substations, telecom, data centers, and industrial installations
- Indoor/Outdoor Use: Suitable for exposed, buried, or building-entry conduits
Catalog Information
| Catalog # | Package Description | Units/Case |
|---|---|---|
| FST-250KIT1 | 1 × 8.5-oz (240-g) FST Foam Sealant Tube 3 Mixing Nozzles 4 Foam Damming Strips 1 Abrasive Strip 1 Pair Disposable Gloves 1 Positioning Rod 1 Pre-Treating Wipe 1 Resealing Cap Instructions Tool sold separately |
1 |
| FST-250KIT | Same contents as FST-250KIT1 in a case of 6 | 6 |
| FST-250 | 1 × 8.5-oz (240-g) FST Foam Sealant Tube 1 Mixing Nozzle 1 Resealing Cap |
12 |
| FST-DAM | 1 × 24-inch Foam Damming Strip | 24 |
| FST-MINI-1 | 1 × 50-ml Cartridge 2 Mixing Nozzles 6 Foam Discs 1 Pair Disposable Gloves Instructions |
1 |
| FST-MINI-1G* | Same as FST-MINI-1 plus 1 × TOOL-50-11 *Sold in the U.S. only |
1 |
| FST-MINI-B6 | 6 × FST-MINI Cartridges | 1 |
| FST-MINI-B6G* | 6 × FST-MINI Cartridges plus TOOL-50-11 *Sold in the U.S. only |
1 |
Refer to the Polywater FST Technical Data Sheet (TDS) for complete specifications.