Parcel Orders over $300 Ship Free.
Prime Resins Prime Flex 900 XLV Cartridge
Prime Flex 900 XLV polyurethane resin is a low viscosity, hydrophilic resin that reacts with water and expands to form a closed cell, watertight foam. It is typically injected under pressure to seal actively leaking joints and cracks in concrete structures, including hairline cracks.
- Up to 600% expansion (unconfined)
- Low viscosity will penetrate tight cracks
- Extremely tough and flexible
$38.90
Availability:
In stock
( 66 Available )
SKU
PR 900 XLV-50-2:1
Prime Resins Prime Flex 900 XLV Cartridge
Prime Flex 900 XLV is a single-component, hydrophilic polyurethane injection resin designed to seal actively leaking cracks and joints in concrete. This water-activated resin reacts to form a flexible, closed-cell foam that expands up to 600%, providing a watertight seal even in dynamic, hairline cracks. Its low viscosity allows it to penetrate deep into tight cracks, while its NSF 61 compliance makes it safe for use in potable water structures. Ideal for leak repair in below-grade concrete, tanks, and pits, Prime Flex 900 XLV can be injected using standard pumps directly from the cartridge without pre-mixing.
Key Features:
- Water-activated polyurethane resin forms a flexible, watertight foam
- Expands up to 600% to seal cracks and voids
- Penetrates hairline cracks with low viscosity of 250–350 cps
- Compliant with NSF/ANSI Standard 61 for potable water contact
- Single-component formula – no mixing or accelerators required
- Suitable for vertical, overhead, and below-grade repairs
Applications:
- Sealing water leaks in concrete tanks and reservoirs
- Dams, spillways, and hydroelectric structures
- Below-grade foundation walls and retaining walls
- Elevator pits and service vaults
- Cracks in parking decks and bridge decks
Technical Specifications:
| Property | Value |
|---|---|
| Solids Content | 88% |
| Viscosity | 250–350 cps |
| Expansion (Unconfined) | Up to 600% |
| Tensile Strength (ASTM D-3574) | 450 psi |
| Elongation (ASTM D-3574) | 350% |
| Tear Resistance (ASTM D-3574) | 21 lb/in |
| Shrinkage | < 2% |
| Reaction Time (73°F) | Initial: 30 sec; Full Rise: 1 min 50 sec |
| Packaging | 2:1 Quick Mix Cartridge |
Frequently Asked Questions:
How is Prime Flex 900 XLV activated?
It reacts with water to form an expanding foam. Water in the crack or added during injection initiates the reaction.
Can it be used in potable water tanks?
Yes. It meets NSF/ANSI Standard 61 for contact with potable water.
What type of cracks does it seal best?
It is ideal for hairline to medium cracks in concrete subject to active water leaks.
| Brand | Prime Resins |
|---|---|
| Manufacturer | Prime Resins |
