Mechanical Reinforcement Products
Stop It® CR-U
STOP IT® Custom Repair – Urethane System (CR-U)
When mechanical systems shut down, so does production.
STOP IT® CR-U is a low-cost, customized composite system to repair and reinforce mechanical systems, structures and piping. Furnished factory-impregnated with our proprietary urethane resin, it’s odorless, non-flammable, ready to apply, and cures by way of a chemical reaction with water.
Engineered for your specific situation, STOP IT® CR-U cures in wet conditions and underwater, can be applied over a wide temperature range and is heat-resistant to 250°F.
- Uses a water-activated polyurethane resin.
- Ready to apply, right out of the bag, so there’s no messy setup or complex mixtures.
- Cures by way of a chemical reaction with field-applied water.
- When cured, it’s a durable, high-strength material that’s impervious to fuels, most chemicals, and solvents.
- It permanently bonds to a variety of surfaces, including metals, composites, concrete, plastics, and wood.
- Available in several E-glass and carbon fabrics to satisfy a wide variety of application situations, so you get the repair solution that fits your situation.
- The unique urethane resin system has been tested to and meets the requirements of the ASME PCC-2 composite piping reinforcement standard.
- Furnished resin-wetted and uncured, in rolls, STOP IT® CR-U ships to the field inside hermetically sealed metalized pouches. To use the product, just tear open the pouch and start wrapping or laying up onto the surface to be repaired or encapsulated.
- Initial hardening happens in about an hour, with substantial strength increase over the next few hours.
Glass Transition Temperature (Tg): 288°F
Cure Time: 30 minutes nominal, after water application
Chemical Resistance: Resistant to acetone, MEK, toluene, gasoline, ethyl alcohol and many others.
CR-U Adhesion: 1,000 psi (lap shear) to abraded carbon steel, using PA1 Primer/Adhesive
Heat Distortion Temperature: >325°F
| Part No | Description | Case Quantity | Case WT (lbs) |
| ** | Contact InduMar |
| Product Reinforcement | CR-U3 Woven Bi-Axial Glass |
CR-U5 Woven Bi-Axial Glass |
CR-U22 Knitted Glass |
CR-Uc2 Bi-Axial Carbon |
| Cured wrap thickness (mils) | 16 | 28.5 | 38 | 30 |
| Tensile strength warp direction (ksi) | 60,900 | 45,500 | 31,555 | 76,189 |
| Tensile strength fill direction (psi) | 32,429 | 45,500 | 31,555 | 61,663 |
| Tensile modulus warp direction (msi) | 3.01 | 2.28 | 1.98 | 4.56 |
| Tensile modulus fill direction (msi) | 2.16 | 2.28 | 1.98 | 4.50 |
| Long term tensile load per ply (lbs/in) | 465 | 600 | 623 | 1665 |
