Fiberglass water-activated composite solution.

Syntho-Glass® is the originally, patented fiberglass pre-impregnated composite that is activated by salt or freshwater. Packaged in a hermetically sealed foil pouch, it is ready to use and does not require any measuring or mixing. This system, when used with the appropriate primary sealant, enables you to repair and reinforce virtually any diameter pipe in minutes. Syntho-Glass® not only restores a pipe to its original psi rating, but actually can make the repair area stronger than the original pipe, reducing downtime, saving in parts and labor. With an initial setting time of only 30 minutes (75°F/24°C), Syntho-Glass® is excellent on copper, steel, SS, PVC, FRP, clay, concrete, rubber, and more. It is safe to use, nontoxic, noncombustible, and odorless. Syntho-Glass® is a versatile solution for industries where quick-action pipe repair can be critical.



  • Impact protection
  • Emergency repair
  • Corroded pipes
  • Irregular pipe fittings
  • Force mains and gravity lines
  • Joint and tee repair
  • Underwater repair and splash zone


  • Ready to use
  • Effective, time-saving
  • No mixing and no mess
  • Sets rock hard in minutes
Chemical Resistance ASTM D 543, Test period 2 months at 73°F (23°C)
Solution Tested Product Result
Sulfuric Acid 50% No Effect
Hydrochloric Acid 50% No Effect
Sodium Hydroxide Solution 20% No Effect
Gasoline No Effect
Toluene No Effect
Xylene No Effect
Mineral Spirits No Effect
Distilled Water No Effect


Temperature vs. Time
Average Temperature Approx Work Time Return to Service Time
95°F (35°C) 3 min. 23 min.
70°F (21°C) 8 min. 28 min.
60°F (16°C) 10 min. 1 hr. 25 min.
50°F (10°C) 14 min. 2 hrs. 42 min.
42°F (6°C) 17 min. 3 hrs. 2 min.
35°F (2°C) 20 min. 6 hrs. 21 min.


Mechanical Properties
Test Method Result
Tensile Strength ASTM D638 36,000 psi (2482.1 bar)
Lap Shear Strength ASTM D5379 900 psi (62.05 bar)
Flexural Strength ASTM D790 26,100 psi (1799.53 bar)
Dielectric Strength ASTM D149 16,000 Volts
Impact Resistance ASTM G14/G62 123 ft. lb (167J)