
Flexseal HI300
Injection hose for protection against potential and active leak in construction and cold joint in concrete
Flexseal HI300 is a re-injectable hose with integral valves specially formulated from PVC compound wrapped with neoprene strips acting as non-return valves and covered with PP braiding that strengthens the whole assembly.
Flexseal HI300 is a tough, flexible, and resilient material that withstands weathering, low temperatures, and constant immersion in water. It is specially designed to be installed in concrete construction joints as a precautionary measure to waterproof them and to seal any cracks or voids in the joint area to eliminate the possibilities of leakage in future.
Flexseal HI300 is suitable for many injection materials such as injection resins, micro-fine cement, or cement slurry to seal capillary cracks.

- Economic - Reinjection option prevents leaks caused by settlement or structural movement.
- Non destructive - No drilling or damage to the concrete.
- Ease of use - Simple installation even at complicated details.
- Verifiable - testing of joints for water-tightness before installation of membrane or back filling.
- Cost and time efficient, eliminates costly design, welding and installation of water bar.
- Resilient braiding.
- Unaffected by alkalis, most water solutions of organic chemicals, aliphatic hydrocarbons (fuel), mineral oils, acids and alcohols.
Flexseal HI300 injection system has been designed to prevent passage of water through concrete joints:
- Construction and cold joints.
- Watertight structures against water and salt water ingress.
- Water excluding structures; e.g subways, basements and tunnels.
- Water retaining structures; e.g. canals, dams and reservoirs.
- Sewage treatment plants.
- Below ground concrete construction.
Flexseal HI300 is available in 100 m rolls.