SikaSeal®-128
White
$2.80
Sale price
$2.80
Regular price
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SikaSeal®-128
$2.80
Sale price
$2.80
Regular price
SikaSeal®-128
A 1-component, non-corrosive neutral silicone sealant for indoor and outdoor use. Primerless adhesion to glass, metals, aluminium, wood, ceramic tiles, and painted surfaces. High elasticity with ±25% movement capability, low odour, and excellent UV and weathering resistance.
Overview
Specifications
| Property | Basic Colours | Transparent | Standard |
|---|---|---|---|
| Chemical Base | Neutral silicone | – | |
| Density | ~1.45–1.55 kg/L | ~0.95–1.05 kg/L | ISO 1183-1 |
| Shore A Hardness | ~30–50 | ~20–30 | ISO 868 |
| Tensile Strength | ~1.0 MPa | ~0.5 MPa | ISO 8339 |
| Elastic Recovery | >80% | ISO 7389 | |
| Movement Capability | ±25% | ±20% | ASTM C719 |
| Elongation at Break | ≥250% | ≥200% | ISO 37 |
| Service Temperature | −40°C min / +150°C max | – | |
| Skin Time | ~15 minutes | ~5 minutes | CQP 019-1 at +23°C/50% r.h. |
| Curing Rate | ~3 mm / 24 hours | CQP 049-2 at +23°C/50% r.h. | |
| Shelf Life | 12 months from date of production | – | |
| Storage | Dry, upside down, below +27°C, away from direct sunlight | – | |
Usage
- Weatherproof joints between glass, metals, painted surfaces, aluminium, wood, and ceramic tiles
- Window and door installation
- Tile perimeter joints
- General joint sealing – interior and exterior
Advantages
- Good UV and weathering resistance
- Primerless adhesion to a wide range of substrates
- High elasticity and flexibility (±25% movement capability)
- Low odour, neutral curing
- Non-corrosive – safe for use with metals
Packaging
- ~280 ml (420 g) cartridge – basic colours (12 per box)
- ~280 ml (280 g) cartridge – transparent
- ~600 ml (900 g) sausage – basic colours (20 per box)
- ~600 ml (600 g) sausage – transparent (20 per box)
Colour
- White, Transparent, Grey, Black (others on request)
Important – Do NOT Use On
- Alkaline surfaces such as concrete, plaster, and masonry
- Bituminous substrates, natural rubber, or EPDM rubber
- Natural stone, marble, or granite (bleeding may occur)
- Joints in and around swimming pools
- Joints under water pressure or permanent water immersion
- Totally confined spaces (requires atmospheric moisture to cure)
- Structural glazing or insulated glazing / food contact applications
Product Details
Product Information
| Property | Detail |
|---|---|
| Composition | Neutral silicone (1-component) |
| Shelf Life | 12 months from date of production |
| Storage Conditions | Dry, upside down, below +27°C, protected from direct sunlight |
Technical Information – Consumption Guide
| Joint Width (mm) | Joint Depth (mm) | Joint Length per 300 ml |
|---|---|---|
| 6 | 4 | ~12.5 m |
| 9 | 5 | ~6.5 m |
| 12 | 6 | ~4 m |
| 20 | 10 | ~1.5 m |
Joint Design
- For joints ≥10 mm and ≤20 mm wide: recommended joint depth of 10 mm
- For larger joints, contact Sika Technical Service Department
Application
Application Information
| Parameter | Value |
|---|---|
| Ambient Temperature | +5°C min / +40°C max (min. 3°C above dew point) |
| Substrate Temperature | +5°C min / +40°C max (min. 3°C above dew point) |
| Skin Time (basic colours) | ~15 minutes at +23°C / 50% r.h. |
| Skin Time (transparent) | ~5 minutes at +23°C / 50% r.h. |
| Curing Rate | ~3 mm / 24 hours at +23°C / 50% r.h. |
Application Steps
- Substrate Preparation: Surface must be sound, clean, dry, and free from dirt, oil, grease, old sealants, and poorly bonded coatings. Remove all dust and loose material. SikaSeal®-128 adheres without primers or activators on most substrates.
- Priming – Non-Porous Substrates (for optimum adhesion): Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder-coated metals, glazed tiles: lightly abrade, clean, and pre-treat with Sika® Aktivator-205. Wait >15 min (<6 hours). Other metals (brass, titanium-zinc): apply Sika® Aktivator-205, wait >15 min, then prime with Sika® Primer-3 N. Wait >30 min (<8 hours). PVC: apply Sika® Primer-215, wait >30 min (<8 hours). Glass: clean with Isopropanol.
- Priming – Porous Substrates: Prime with Sika® Primer-3 N by brush. Wait >30 min (<8 hours) before sealing.
- Masking: Apply masking tape where neat joint lines are required. Remove within the skinning time after finishing.
- Joint Backing: Insert a suitable backing rod to the required depth.
- Application: SikaSeal®-128 is ready to use. Prepare the cartridge or foil pack, insert into the sealant gun, and fit the nozzle. Extrude into the joint ensuring full contact with joint sides. Avoid air entrapment.
- Finishing: Immediately tool the sealant firmly against the joint sides for adequate adhesion and a smooth finish. Use a compatible tooling agent (water is suitable). Do not use solvent-based tooling products.
- Cleaning: Clean tools immediately with Sika® Remover-208. Hardened material can only be removed mechanically. For skin cleaning, use Sika® Cleaning Wipes-100.