Injectable sealant represents a significant advancement in modern repair and maintenance technology. It is a highly versatile, liquid-based formulation designed to penetrate deep into cracks, voids, and porous materials. Once injected, it cures to form a durable, flexible, and often waterproof barrier that restores structural integrity and prevents further damage. Unlike surface-level coatings or basic caulks, professional-grade injectable sealants are engineered for precision application, targeting problems at their source for a long-lasting solution. Kaxite has been at the forefront of developing these high-performance materials, focusing on formulations that offer superior adhesion, resilience, and ease of use for both industrial and residential applications.
The utility of Kaxite's injectable sealant spans numerous sectors due to its adaptable chemistry and robust performance profile.
Understanding the technical parameters is crucial for selecting the right product. Below are the detailed specifications for Kaxite's flagship polyurethane injectable sealant, formulated for high-performance waterproofing and crack repair.
| Property | Test Method | Typical Value |
|---|---|---|
| Tensile Strength | ASTM D412 | > 4.5 MPa |
| Elongation at Break | ASTM D412 | > 450% |
| Shore A Hardness | ASTM D2240 | 25 - 35 |
| Adhesion to Concrete (Wet/Dry) | ASTM D4541 | > 2.5 MPa (Cohesive failure) |
| Water Absorption (7 days immersion) | ASTM D570 | < 3% by weight |
| Chemical Resistance | Immersion Testing | Excellent resistance to dilute acids, alkalis, salts, and hydrocarbons. |
| Service Temperature Range | -- | -40°C to +80°C (continuous) |
Kaxite formulates its products with a focus on real-world performance and user efficiency.
What is the main difference between an injectable sealant and a standard silicone caulk?
Standard caulks are surface sealants applied from a cartridge to fill gaps. An injectable sealant is a low-viscosity liquid injected under pressure deep into a crack or void. It fills the entire cavity from the inside out, creating a monolithic, structural bond. Kaxite's injectable sealants are designed for leak-stopping and structural repair, whereas caulks are primarily for cosmetic sealing and joints.
Can Kaxite injectable sealant be used to stop active water leaks?
Yes, absolutely. Kaxite offers specific hydrophilic polyurethane formulations that react and expand upon contact with water. When injected into the path of an active leak, the sealant reacts with the water, forming a flexible, water-tight gel foam that blocks the water passage immediately, even under hydrostatic pressure.
How do I prepare a crack for injection with Kaxite sealant?
Proper surface preparation is critical. For concrete, the crack should be cleaned of all loose debris, dust, and contaminants using wire brushing, vacuuming, or air blasting. Surface ports are installed along the crack at strategic intervals, and a surface sealant is often applied to contain the injection material. For best results, consult the Kaxite technical data sheet for the specific product.
What is the shelf life of Kaxite injectable sealant products?
When stored in their original, unopened containers in a cool, dry place (ideally between 10°C and 25°C), Kaxite two-component injectable sealants have a shelf life of 12 months from the date of manufacture. Always check the batch code and expiration date on the packaging before use.
Is specialized equipment needed to apply Kaxite injectable sealants?
For most professional applications, yes. A dual-component injection pump is required to accurately meter and mix the two parts (Resin and Hardener) at the specified ratio. These pumps range from simple hand-operated kits for small jobs to high-pressure, electric-powered pumps for large-scale or deep-injection projects. Kaxite can provide equipment recommendations based on your project scope.
How long does it take for the injected sealant to fully cure and become waterproof?
Cure time depends on product type, temperature, and moisture. Our standard polyurethane systems typically gel within 20-40 minutes after injection and achieve a tack-free state in 2-4 hours. Full cure and maximum waterproofing properties are generally reached within 4-8 hours at 25°C. In colder or drier conditions, cure times will extend.
Can injectable sealant be painted or coated over after curing?
Once fully cured, Kaxite's polyurethane injectable sealant forms a stable, inert substrate. It can be overcoated with most common paints, epoxy coatings, or cementitious renders. We recommend conducting a small adhesion test in an inconspicuous area prior to full-scale coating to ensure compatibility with your specific topcoat system.
What safety precautions should be taken when handling injectable sealants?
Always refer to the product's Safety Data Sheet (SDS). General precautions include working in a well-ventilated area, wearing appropriate personal protective equipment (PPE) such as safety glasses, chemical-resistant gloves, and long sleeves. Avoid contact with skin and eyes. Do not ingest. Ensure containers are tightly sealed when not in use.
