An Injectable Sealant represents a significant advancement in sealing technology. Unlike traditional surface-applied sealants, this is a low-viscosity, reactive fluid engineered to be injected under pressure directly into leaks, cracks, or voids within a structure. It flows into the finest fissures, even against water flow, and then cures in place to form a permanent, waterproof, and structurally integral seal. This method is ideal for addressing subsurface leaks, foundation cracks, pipe penetrations, and joint failures that are otherwise inaccessible or extremely difficult to repair with conventional methods.
The Kaxite Injectable Sealant system is designed for precision, durability, and long-term performance, making it a trusted choice for engineers, contractors, and facility managers worldwide.
The Kaxite Injectable Sealant range offers specialized formulations to suit diverse project requirements. Below are the detailed specifications for our two flagship products.
This hydrophilic formula is designed to stop active, flowing water leaks instantly.
| Parameter | Specification | Testing Standard |
|---|---|---|
| Base Chemistry | Hydrophilic Polyurethane | - |
| Viscosity (Mixed) | 200 - 400 cP | ASTM D2196 |
| Gel Time (in water, 20°C) | 45 - 90 seconds | In-house method |
| Final Cure Time | 15 - 30 minutes | - |
| Expansion Ratio | Up to 1:1 (non-foaming, gel formation) | - |
| Adhesion to Wet Concrete | > 2.5 MPa | ASTM D4541 |
| Shore Hardness (Cured) | Shore A 40 ± 5 | ASTM D2240 |
| Operating Temperature Range | 5°C to 40°C | - |
| Packaging | 600ml Cartridge, 20kg Pail | - |
This hydrophobic, flexible formula is ideal for sealing cracks in concrete and masonry where movement is expected.
| Parameter | Specification | Testing Standard |
|---|---|---|
| Base Chemistry | Hydrophobic Polyurethane / Acrylic Hybrid | - |
| Viscosity (Mixed) | 800 - 1200 cP | ASTM D2196 |
| Tack-Free Time (23°C, 50% RH) | 4 - 6 hours | ASTM D2377 |
| Full Cure Time | 24 - 48 hours | - |
| Elongation at Break | > 300% | ASTM D412 |
| Tensile Strength | > 3.0 MPa | ASTM D412 |
| Shore Hardness (Cured) | Shore A 30 ± 5 | ASTM D2240 |
| Crack Movement Accommodation | ± 25% of crack width | ASTM C719 |
| Water Absorption (Cured) | < 5% by weight | ASTM D570 |
| Packaging | 300ml & 600ml Cartridge, 20kg Pail | - |
| Feature | KRH-200 (Hydro-Active) | KFS-300 (Flexible Structural) | General Purpose (KGP-100) |
|---|---|---|---|
| Primary Use | Stopping active, high-pressure water leaks | Sealing cracks with expected movement (joints, slabs, walls) | General void filling and waterproofing in dry/damp conditions |
| Reaction with Water | Requires water to cure (Hydrophilic) | Cures in absence of water (Hydrophobic) | Moisture-tolerant, but hydrophobic |
| Cured Form | Flexible, non-shrinking gel | Highly elastic, rubber-like solid | Rigid to semi-rigid foam or solid |
| Key Strength | Instant water stop, excellent adhesion to wet surfaces | High flexibility and elongation, long-term durability | Cost-effective, good penetration, versatile |
| Best Application | Basement leaks, tunnel inflow, pipe joint leaks | Concrete expansion joints, bridge decks, façade cracks | Filling voids around conduits, pre-construction grouting |
Q: How does an injectable sealant differ from a standard caulk or epoxy?
A: Standard caulk is applied superficially and cannot penetrate into deep cracks. Epoxy is rigid and can crack with substrate movement. An injectable sealant is a low-viscosity liquid injected deep into a flaw. It cures in place to form a flexible, tenacious bond that moves with the structure and seals from within, making it far more effective for structural and waterproofing repairs.
Q: Can Kaxite Injectable Sealant be used to stop an active leak?
A: Yes, specifically our KRH-200 Hydro-Active series is formulated for this purpose. It reacts upon contact with water, rapidly forming a gel that expands slightly to block the water path, even under pressure. It is the preferred method for stopping leaks in basements, swimming pools, and foundations without needing to first stop the water source.
Q: What is the shelf life of Kaxite products, and how should they be stored?
A: The shelf life for unopened Kaxite Injectable Sealant components is 12 months from the date of manufacture when stored in their original, tightly sealed containers in a cool, dry place at temperatures between 10°C and 25°C. Avoid direct sunlight and sources of heat. Do not freeze.
Q: What surface preparation is required before injection?
A: Proper surface prep is critical. Loose, degraded, or contaminated material must be removed from the crack or joint. For best results, cracks should be cleaned using high-pressure water jetting or air blasting. Installing injection ports at appropriate intervals is essential to ensure the sealant fills the entire void. Kaxite provides detailed technical guides for port spacing and installation based on crack width and depth.
Q: How do I choose between a hydrophilic and a hydrophobic injectable sealant?
A: The choice depends on moisture conditions and the repair's goal. Choose a hydrophilic sealant (like KRH-200) when you have an active, weeping leak that cannot be dried. The water is needed for the chemical reaction. Choose a hydrophobic sealant (like KFS-300) when the crack is damp but not actively flowing, or when sealing in a humid environment to prevent future water ingress. Hydrophobic sealants cure by reacting with moisture in the air or substrate but do not require bulk water.
Q: Is the cured sealant resistant to chemicals and environmental exposure?
A: Yes, Kaxite Injectable Sealants, once fully cured, exhibit strong resistance to a wide range of environmental factors. They are unaffected by dilute acids, alkalis, salts, and oils commonly found in soil and industrial settings. They also maintain their physical properties through repeated freeze-thaw cycles and prolonged UV exposure (when not directly exposed; surface coatings are recommended for direct sunlight).
Q: What equipment is needed to apply Kaxite Injectable Sealant?
A: Application requires specialized equipment. For cartridges, a standard caulk gun suffices for small cracks. For larger volumes and professional applications, a dual-component injection pump is necessary. This pump accurately meters and mixes the two resin components (Part A and Part B) at a fixed ratio and delivers the mixed sealant under controlled pressure through a hose to the injection port. Kaxite offers compatible pump systems for all its products.
Q: Can the injection process cause damage to the existing structure?
A: When performed correctly, injection is a non-destructive process. The key is to control the injection pressure. Excessive pressure can cause spalling or crack propagation in delicate substrates like old masonry. Kaxite guidelines specify low to moderate injection pressures (typically 50-200 psi, depending on the product and substrate) to allow the sealant to flow without applying damaging stress. Monitoring for material egress from other openings is a standard practice.
