CS-NRI Syntho-Glass NP Pipe Repair Kits (No Pressure, Depressurized) (NSF61 & BS6920 compliant for drinking water contact)

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Regular price $105.00 CAD
100 units available
100 units are available

CS-NRI Syntho-Glass NP Pipe Repair Kits (No Pressure, Depressurized) optimized for copper, steel, SS, PVC, FRP, clay, concrete, and rubber pipes.

The no pressure (NP) repair system was specifically designed for depressurized pipe repair applications on copper, steel, SS, PVC, FRP, clay, concrete, and rubber. By combining the original Syntho-Glass® product, with the extremely chemically resistant Syntho-Steel™, this offers the geometric flexibility to repair joints, tees, couplings, and pinholes. This complete system simplifies the application process and is prepackaged to accommodate pipes up to 10 inches in diameter. Larger repair applications can be engineered to meet your requirements.

Syntho-Glass® is the originally patented fiberglass pre-impregnated composite that is activated by saltwater or freshwater. Packaged in a hermetically sealed foil pouch, it is ready to use and does not require any measuring or mixing. When used with the appropriate primary sealant, it can repair and reinforce virtually any pipe in minutes. Syntho-Glass® not only restores a pipe to its original pressure rating, it can make the repair area stronger than the original pipe reducing downtime, saving in parts and labor. Syntho-Glass® is a versatile solution for situations in which swift repair is critical. With an initial setting time of only 30 minutes (75°F/24°C), Syntho-Glass® provides superior, rapid repair on copper, steel, stainless steel, PVC, FRP, clay, concrete, and rubber pipe. Designed to be inherently safe, it is nontoxic, noncombustible, and odorless.

This repair system also is easy to install. The Syntho-Glass® installation kit delivers all the components needed for a repair and arrives on site packaged in a hermetically sealed foil pouch, ready to use without any measuring or mixing.

Part Number Wrap Size Width (in) & Length (ft) Pipe Size coverage by wrap
NP205 2in x 5ft ½ to 1 in
NP309 3in x 9ft 1 ¼ to 2 in
NP415 4in x 15ft 2 ½ to 4 in
NP430 4in x 30ft 4 ½ to 6 in
NP650 6in x 50ft 6 ½ to 10 in

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


  • Includes the chemical-resistant Syntho-Steel as a kit component for added system strength
  • Ready to use
  • No mixing or mess
  • Needs no special tools
  • Environmentally safe
  • No VOCs
  • Delivers simple, effective, durable repair/restoration
  • Completely cures in minutes


  • Supplied as a complete kit
  • Quick and easy installation
  • Excellent adhesion to many substrates
  • Good chemical resistance range
  • NSF61 & BS6920 compliant for drinking water contact

Physical Properties

  • VOCs: None
  • Set Time: 30 Minutes at 75°F (24°C)
  • Resin Type: Water-activated polyurethane
  • Resin Application: Pre-impregnated
  • Service Temperature: -50° to 250°F (-45° to 121°C)
  • Service Temperature:
    • Syntho-Glass: -46 do 121°C
    • Syntho-Steel: 46 do 121°C
    • Butyl Tape: 46 do 70°C
  • Application Temperature: 32° to 150°F (0° to 65°C)
  • Pressure once cured w/primary sealant: Max 300 psi (20.6 bar)
  • NSF61 and BS6920 approved for potable water when Syntho-Steel is used as the primary sealant
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

Working Time

  • 5 Minutes at 75°F (24°C)

Shelf Life

  • 24 months with recommended storage

Storage Conditions

  • Store in original container protected from direct sunlight in a dry, cool and well-ventilated area, away from incompatible materials, food and drink. Storage at temperature between 64°F and 86°F. Keep away from humidity and water. Keep container tightly closed and sealed until ready for use.