Performance Characteristics:
•One-component, translucent and user-friendly with excellent workability; it can be directly extruded and applied with a sealant gun.
•Ketoxime curing system with neutral curing property, non-corrosive to coated glass, most metals and other construction materials.
•Outstanding aging resistance, ozone resistance and water resistance.
•Excellent adhesion to most construction materials.
•Good compatibility with other neutral silicone sealants.
SMT-Z3T is a one-component neutral room-temperature curing silicone elastic sealant. It delivers excellent adhesion performance and is non-corrosive to most building materials except copper while maintaining reliable bonding strength. It serves as an ideal waterproof sealing material for doors, windows and indoor edge finishing.
Application Areas
- Joint sealing for indoor glass partitions, display cabinets and kitchen counter tops
- Bonding and sealing for temporary light fittings and art crafts
- Suitable for non-load-bearing areas without long-term water immersion, intense ultraviolet radiation or high temperature exposure
Package
- This product is packed in standard 300 mL plastic sealant cartridges, 24 cartridges per carton. Custom filling service is available upon customer request.
| Test Items | Technical requirements | Typical Data | Test Method | |
|---|---|---|---|---|
| Appearance | Smooth and uniform paste, free of bubbles, skinning and gel lumps | Smooth and uniform paste, free of bubbles, skinning and gel lumps | Visual inspection | |
| Density, g/cm³ | 0.95±0.03 | 0.95 | GB/T 13477.2-2018 | |
| Sag Resistance | vertical, mm | ≤3 | 0 | GB/T 13477.6-2002 |
| Horizontal | No deformation | No deformation | ||
| Tack-free time, min | 5-10 | 5 | GB/T 13477.5-2002 | |
| Extrudability, g/5s | ≥40 (Nozzle tip diameter: φ3.2 mm, operating pressure: 0.24 MPa) | 42 | GB/T 13477.3-2017 | |
| Cure rate, mm/24h | ≥2.5 | 3.0 | GB/T 13477.22 | |
| Elongation at Break, % | ≥300 | 500 | GB/T 528-2009 | |
| Tensile Strength, Mpa | ≥1.0 | 1.4 | GB/T 528-2009 | |
| Hardness, Shore A | 25-35 | 26 | GB/T 39693.4-2025 | |
Before application:
- Prior to application, compatibility tests between the sealant and contacting materials as well as adhesion tests on the substrates to be bonded shall be carried out.
Construction Method:
- All application surfaces must be clean, dry and free of contaminants.
- Fit the cartridge into a suitable caulking gun. Cut the nozzle according to joint width, then extrude sealant into the joint to ensure full contact between sealant and joint edges.
- Compact the sealant with a proper tool and scrape off excess material.
- Not to be used as structural sealant.
- Not suitable for outdoor areas with intense ultraviolet exposure.
- Not recommended for copper and polycarbonate substrates.
- Do not apply when the substrate surface temperature is below 5℃ or above 40℃.
- Not suitable for frosted or damp surfaces.
- Unsuitable for continuously submerged or permanently humid locations.
- Avoid contact with rubber materials (such as rubber strips, rubber pads, etc.) to prevent yellowing.
- Avoid contact with acidic or alkaline substances (e.g. exterior wall cleaning agents) to prevent discoloration.
- Not compatible with substrates that bleed oil, plasticizers or solvents, such as surfaces of oil-impregnated wood.
- The application surface must be clean, dry and free of contaminants.
- Use within the product shelf life; expired products shall not be used.
- Construction shall be carried out in strict accordance with adhesion test procedures.
- Prevent direct contact with skin and eyes. Do not ingest.
- Keep away from children. Store out of children’s reach.
- Trace amounts of chemical substances will be released during curing. Sufficient ventilation must be maintained at the working area. The fully cured product is non-toxic to human bodies.
