Non-Pressure Pipe, Joint & Crack Repair Kits By Neptune Research, Inc.

Repairs broken or cracked pipes and joints. Ready to use, heat resistant, no mixing, no mess, sets rock hard in minutes



Product Information

Syntho-Glass® repairs broken or cracked pipes damaged through everyday wear or when an unexpected emergency occurs. It is patented and easy to use for quick action.

Typical Applications
Non-pressure repair and protection for:

  • Cracked piping
  • Leaking joints
  • Corroded pipes
  • Emergency repair
  • Potable waterlines
  • Irregular pipe fittings


  • Ready to use
  • Heat resistant
  • Effective time saving
  • No mixing & no mess
  • Sets rock hard
  • NSF61 approved

Repair Kit Contents

  • Syntho-Glass®
  • Butyl Patch
  • Syntho-Steel™ Putty
  • Gloves
  • Instructions


Physical Properties

Resistance Temperature to Heat
Resistance Temperature to Cold
Gasoline & Oil
Low Concentration Mineral Acid
High Concentration Mineral Acid
High Concentration Alkali
Low Concentration Alkali


Mechanical Properties

Tensile Strength
Lap Shear Strenght
Flexural Strength
Dielectric Strength

38,000 psi     
900 psi     
18,000 psi     
16,000 volts    


Preparation & Application
(Maximum pressure use of UP kit is 60 psi)
Installation Guide in pdf Format
1a. Joint / Potable water systems: Knead putty until uniform in color. Roll into a rope or ball. Place firmly into joint or crack. Feather edges with wet finger.
1b. Crack: Remove adhesive backing from Butyl Patch and apply directly over break; press firmly onto pipe.
2. Remove Syntho-Glass® from foil pouch using enclosed gloves. Soak in temperate water for 20 seconds.
3. Tightly wrap Syntho-Glass using entire roll. Wrap approximately 2” above and below the repair and directly over the rubber tape.
4. Squeeze and mold Syntho-Glass in the direction of wrap, removing excess water and spreading resin until tacky to touch (approximately 3-5 min.). Allow 30 minutes at 75°F before re-applying water pressure.
Ordering Information
Pipe Diameter Roll Size Kit #
1/2" - 1"
1-1/4" - 2"
2-1/2" - 4"
4-1/2" - 6"
2" x 5"
3" x 9'
4" x 15'
4" x 30'