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Prime Resins Prime-Flex 920 10:1 Cartridge 11248
Prime Flex 920 is a single-component polyurethane injection resin used to seal gushing leaks, including wide gaps, in concrete where the structure is not subject to movement. This hydrophobic, super low viscosity polyurethane reacts with water and expands to form a closed cell, watertight, rigid foam. Due to its low viscosity, 920 is also used for permeation grouting of loose soils to consolidate soil particles and increase the load-bearing capacity.
- Cheaper and less disruptive than replacement
- Up to 2900% expansion (unconfined)
- Watertight on gushing leaks
$59.82
Availability: In stock ( 40 Available )
SKU
14866
Prime Resins Prime Flex 920 – Hydrophobic Polyurethane Injection Resin
Prime Flex 920 is a single-component hydrophobic polyurethane injection resin designed for sealing gushing water leaks, wide cracks in concrete, and stabilizing loose soils through permeation grouting. Upon contact with water, it rapidly expands into a watertight, closed-cell foam—offering unconfined expansion of up to 2900 percent. Its low viscosity allows for deep penetration into fine cracks and soil, making it ideal for curtain grouting, foundation repairs, manholes, tunnels, and other below-grade structures. Prime Flex 920 is NSF/ANSI Standard 61 certified for potable water contact and offers variable reaction times when paired with Prime Kat or Kick Fast Kat catalysts.
Key Features:
- Hydrophobic polyurethane expands upon water contact
- Seals active water leaks, including gushing leaks
- Low viscosity for deep penetration into fine cracks and soils
- Adjustable reaction times (4 to 90+ seconds) with catalyst
- Certified NSF/ANSI 61 for potable water systems
- Resists shrinkage and forms rigid, closed-cell foam
- Available in 10:1 Quick Mix cartridges for easy application
- Effective for curtain grouting and soil stabilization
Technical Specifications:
| Property | Value |
|---|---|
| Viscosity | 110 – 130 cps |
| Solids Content | 100% |
| Unconfined Expansion | Up to 29x (2900%) |
| Tensile Strength (ASTM D1623) | 41 psi |
| Tensile Elongation (ASTM D1623) | 3.4% |
| Compressive Strength with Sand (ASTM D695) | 1027 psi |
| Shrinkage (ASTM D1042 / D756) | None |
| Mix Ratio with Kick Fast Catalyst | Up to 10% by volume |
| Reaction Time Range | < 5 to 90 seconds (adjustable) |
| Shelf Life | 18 months (unopened) |
Frequently Asked Questions:
What is Prime Flex 920 used for?
It is used for sealing gushing leaks in concrete structures, curtain grouting below-grade areas, and permeation grouting in loose soils.
How much does Prime Flex 920 expand?
In unconfined lab conditions, it expands up to 29 times its original volume. Actual expansion in soil or cracks varies depending on conditions.
Is Prime Flex 920 safe for drinking water applications?
Yes, it is certified to NSF/ANSI Standard 61 for potable water contact.
| Brand | Prime Resins |
|---|---|
| Manufacturer | Prime Resins |
