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.


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Typical Applications

  • 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


Syntho-Glass Size vs. Pipe Diameters

Cloth Width Length Required Pipe Diameter r Repair Length
4"30' 6"8"
4"50' 8"12"
4"50' 10"11"
8"30' 12"9"
8"30' 16"7"
8"50' 18"10"
8"50' 24"8"

Chemical Resistance ASTM D 543, Test period 2 months at 73°F (23°C)

Solution TestedProduct Result
Sulfuric Acid 50%No Effect
Hydrochloric Acid 50%No Effect
Sodium Hydroxide Solution 20%No Effect
GasolineNo Effect
TolueneNo Effect
XyleneNo Effect
Mineral SpiritsNo Effect
Distilled WaterNo Effect

Temperature vs Time

Average TemperatureApprox Work TimeReturn to Service Time
95ºF (35ºC)3 min.23 min.
70ºF (21ºC)8 min.28 min.
60ºF (16ºC)10 min.1 hr. 25 min.
50ºF (10ºC)14 min.2 hrs. 42 min.
42ºF (6ºC)17 min.3 hrs. 2 min.
35ºF (2ºC)20 min.6 hrs. 21 min.