Performance Characteristics:
•Ketoxime-curing, one-component, neutral cure system, non-corrosive to metals and coated glass.
•Excellent weathering resistance with good heat resistance, UV resistance, ozone resistance and water resistance.
•Outstanding high and low temperature resistance. After curing, it will not become brittle, hard or crack at -50℃, and will not soften or degrade at 150℃ while maintaining good strength and elasticity.
•Excellent adhesion to most construction substrates.
•Good compatibility with other neutral silicone sealants
SMT - Silicone Sealant Special for Tires is a weatherproof sealant specially designed for tire sealing. It delivers excellent structural adhesion and weathering aging resistance. During application, extrude the sealant from the cartridge into joints requiring sealing with a caulking gun. The sealant absorbs moisture from ambient air at room temperature and cures gradually from surface to core, forming an elastomer to achieve effective sealing.
Application Areas
- Tire-specific
Package
- This product is normally supplied in black. It is packed in 200L drums, and other capacities can be customized upon customer requirements
| 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 | 1.32±0.1 | 1.32 | GB/T 13477.2-2002 |
| Extrudability, g/5s | ≥30 (Nozzle tip diameter: φ3.2 mm, operating pressure: 0.4 MPa) | 40 | GB/T 13477.4 |
| Tack-free time, min | 10-20 | 15 | GB/T 13477.5 |
| Cure rate, mm/24h | ≥2.5 | 3.0 | GB/T 13477.22 |
| Tensile Strength, MPa | ≥1.8 | 1.9 | GB/T 528-2009 |
| Elongation at Break, % | ≥400 | 550 | |
| Hardness, Shore A | 30-40 | 33 | 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.
- Shall not be used as structural glazing sealant.
- Not suitable for copper and polycarbonate substrates.
- Application is not recommended when substrate surface temperature is lower than 5℃ or higher than 40℃.
- Not suitable for frosty, damp areas or locations subject to continuous water immersion.
- Use within shelf life; expired product shall not be used.
- Construction shall be carried out strictly in accordance with adhesion test procedures.
- Avoid direct contact with skin and eyes; do not ingest.
- Keep away from children and store out of their reach.
- Do not apply in airtight and poorly ventilated spaces, as the sealant cures by absorbing moisture from ambient air.
- Trace chemical substances are released during curing. Adequate ventilation shall be maintained at work areas. The fully cured sealant is non-toxic to humans.
