SynthoGlass® UP (under pressure) and Syntho-Glass® NP (non-pressurized) kits are packaged and delivered as complete systems, enabling quick repairs for a wide range of applications on pipes up to 10 inches in diameter.

The SynthoGlass® NP Repair System combines the original SynthoGlass® product with extremely chemically resistant Syntho-Steel™ to deliver a pipe repair system specifically designed for depressurized pipe repair applications on copper, steel, SS, PVC, FRP, clay, concrete, rubber, and more. It has the geometric flexibility to repair joints, tees, couplings, pinholes, and cracks.

SynthoGlass® UP takes repairs to the next level. Packaged with an additional component – uniquely designed Pressure Sealing Rubber Tape – it extends the capabilities of SynthoGlass® NP, allowing for the repair of live leaks up to 60 psi (4.1 bar) pressure on joints, tees, couplings, and pinholes.


SynthoGlass® NP repairs depressurized leaks on:

  • Joints, tees, and couplings
  • Pinholes
  • Cracks

SynthoGlass® UP repairs leaks under pressure to 60 psi (4.1 bar) on:

  • Joints, tees, and couplings
  • Pinholes


  • Supplied as a complete kit
  • Quick and easy installation
  • Good chemical resistance range
  • Heat resistant
  • Designed with Syntho-Glass® pre-impregnated composite and chemically resistant Syntho-Steel™
  • NSF61 and BS6920 approved for potable water when Syntho-Steel™ is used as the primary sealant