Injectable sealant, a cornerstone of modern industrial maintenance and construction, represents a highly advanced class of materials engineered for precision repair and sealing. Unlike traditional surface-applied coatings or tapes, injectable sealants are formulated with a low viscosity, allowing them to be injected under pressure directly into cracks, voids, joints, or leaking areas. The core technology lies in its ability to flow into the most minute imperfections, where it then cures—either through a chemical reaction, moisture exposure, or UV light—to form a durable, flexible, and often waterproof barrier that is integral with the substrate. This method ensures a repair from the inside out, addressing the root cause of failure rather than just masking surface symptoms. Kaxite Sealing has pioneered formulations that offer superior adhesion to a wide range of materials including concrete, metal, masonry, and certain plastics, making our injectable sealant a versatile and critical solution for infrastructure longevity.
Understanding the technical specifications is crucial for selecting the right sealant for your project. Kaxite Sealing's injectable sealant is engineered to meet the highest performance standards across diverse applications. Below are the detailed parameters presented for clarity and professional evaluation.
| Parameter | Value / Description | Test Standard |
|---|---|---|
| Gel Time (at 20°C / 68°F) | 8 - 15 minutes (adjustable per formulation) | ASTM D2471 |
| Full Cure Time | 4 - 6 hours (to handling strength) | - |
| Shore A Hardness (Cured) | 55 - 65 | ASTM D2240 |
| Tensile Strength | >3.5 MPa (500 psi) | ASTM D638 |
| Elongation at Break | >350% | ASTM D638 |
| Adhesion to Concrete (Pull-off) | >2.0 MPa (290 psi) - cohesive failure | ASTM D4541 |
| Water Absorption (7 days) | <5% by weight | ASTM D570 |
| Service Temperature Range | -40°C to +80°C (-40°F to +176°F) | - |
| Package Size | Component A (Resin) | Component B (Activator) | Shelf Life (Unopened) |
|---|---|---|---|
| Standard Kit | 400 ml Cartridge | 100 ml Cartridge | 18 months from date of manufacture |
| Professional Kit | 4.5 Litre Pail | 1.1 Litre Pail | 18 months from date of manufacture |
| Bulk Industrial | 20 Litre Drum | 5 Litre Drum | 18 months from date of manufacture |
Q: What are the most common applications for Kaxite Sealing injectable sealant?
A: Our injectable sealant is exceptionally versatile. Key applications include: sealing cracks in concrete foundations, bridge decks, and parking structures; stopping active leaks in below-grade walls, tunnels, and manholes; repairing expansion and control joints; bonding and grouting anchor bolts and rebar; and sealing pipe penetrations and utility conduits. Its low viscosity allows it to penetrate hairline cracks that surface treatments cannot address.
Q: Can this sealant be used to stop active water leaks?
A: Yes, absolutely. Kaxite Sealing's injectable sealant is specifically formulated for hydrophilic (water-activated) curing, making it ideal for stopping active leaks. When injected into a wet crack, the presence of water initiates and accelerates the curing process, allowing the material to form a flexible, watertight gel plug that expands slightly to lock into the substrate, even under hydrostatic pressure.
Q: On what materials does it adhere best?
A: The product exhibits excellent adhesion to porous and non-porous substrates. This includes all types of concrete (pre-cast, poured-in-place), masonry, stone, brick, steel, aluminum, and most rigid plastics (PVC, ABS). Surface preparation (cleaning, removal of loose debris) is always recommended for optimal bond strength.
Q: What is the difference between gel time and cure time?
A: Gel time refers to the period from mixing the two components until the material loses its liquid properties and becomes a non-flowing gel. This is your working window for injection. Cure time is the period required for the material to develop its full physical properties, such as strength, elasticity, and chemical resistance. Kaxite Sealing's product typically gels in 8-15 minutes but reaches handling strength in 4-6 hours, with full cure occurring within 24-72 hours depending on temperature and humidity.
Q: How flexible is the cured sealant? Can it handle movement in joints?
A: Flexibility is a hallmark of our formulation. With an elongation at break exceeding 350%, the cured sealant can stretch and compress significantly to accommodate thermal expansion, contraction, and dynamic movement in structures without losing adhesion or integrity. This makes it suitable for both static crack repair and moving joint applications.
Q: Is the cured sealant resistant to chemicals, fuels, or UV exposure?
A: The cured polymer offers good resistance to mild acids, alkalis, salts, and water. However, for constant immersion in aggressive chemicals or fuels, we recommend consulting Kaxite Sealing technical support for a specialized formulation. Standard formulations have moderate UV resistance; for permanent outdoor exposure on horizontal surfaces, a protective coating is advised to prevent surface chalking over extended periods.
Q: What is the recommended injection pressure and equipment?
A: For optimal penetration, we recommend using a low-pressure (50-200 psi), piston-style injection pump. High-pressure pumps can cause cracking in fragile substrates or cause the sealant to set too quickly due to heat from friction. For small jobs, a simple caulking gun with a static mixer nozzle for our cartridge kits is sufficient. Always start injection at the lowest point of a crack and work upwards.
Q: How should unused or mixed sealant be stored and disposed of?
A: Unopened containers should be stored in a cool, dry place (ideally between 10°C and 25°C / 50°F and 77°F), away from direct sunlight and sources of heat. Once the two components are mixed, the chemical reaction begins and the material cannot be stored. Uncured waste and empty containers should be handled as chemical waste according to local, state, and federal regulations. Never dispose of uncured material in drains or landfills.
Q: What personal protective equipment (PPE) is required during application?
A: Safety is paramount. Always wear appropriate PPE, including safety glasses or goggles, chemical-resistant gloves (nitrile or neoprene), and protective clothing to prevent skin contact. Use in a well-ventilated area. If generating vapors or mists during high-volume application, appropriate respiratory protection (e.g., an organic vapor respirator) may be necessary. Refer to the Kaxite Sealing Safety Data Sheet (SDS) for complete handling and safety information.
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