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Sika Sikasil 728 RCS Limestone 40oz Unit
Self-leveling, two-component, very rapid cure, ultra low modulus elastomeric, neutral cure silicone sealant. Exceptional performance in extreme high and low temperature applications.
- Jet Fuel Resistant
- All Season Application
- Open to Traffic in One Hour
$72.30
SKU
19054
Sikasil-728 RCS – Self-Leveling Rapid Cure Silicone Sealant
Sikasil-728 RCS is a two-part, self-leveling, ultra-low modulus silicone sealant made for horizontal expansion joints in traffic-bearing applications. It cures fast, holds flexibility in extreme temperatures, and resists jet fuel, de-icing salts, and UV. The product meets ASTM C920 and DOT specifications. Designed for use on highways, bridges, plazas, parking structures, and runways, Sikasil-728 RCS delivers quick return-to-service in demanding environments.
Key Features:
- Two-component, self-leveling horizontal silicone
- Rapid cure system – open to traffic in one hour
- +100% / -50% movement capability
- Performs in extreme high and low temperatures
- Resistant to jet fuel and road salts
- Excellent adhesion – no primer required on most substrates
- Ideal for use on airports, bridges, and stadiums
- Meets ASTM C920, TT-S-00227E, and AASHTO guidelines
Applications:
- Horizontal expansion joints
- Highways and bridge decks
- Airport runways and taxiways
- Saw cut and control joints
- Stadiums and parking garages
- Driveways and plaza decks
Technical Specifications:
| Property | Value |
|---|---|
| Movement Capability | +100% / -50% (ASTM C-719) |
| Elongation at Break | >1000% (ASTM D-412) |
| Tensile Strength | 70 psi (0.48 MPa) |
| Adhesion in Peel | 30 pli on glass, aluminum, and concrete (ASTM C-794) |
| Shore Hardness | 50 ± 5 Shore OO / 4–6 Shore A |
| Skin Time | 10 minutes |
| Tack-Free Time | 25 minutes (ASTM C-679) |
| Cure Time | 90% cure in 1 hour |
| VOC Content | 30 g/L (0.25 lb/gal) |
| Service Temperature | -80°F to 350°F (-62°C to 176°C) |
Frequently Asked Questions:
Can Sikasil-728 RCS be used for airport runways?
Yes, it's commonly used for runways and tarmacs due to its resistance to jet fuel and fast cure time.
What substrates does this sealant adhere to?
It bonds well to concrete, aluminum, steel, tile, ceramic, masonry, and stone without a primer in most cases.
Does this sealant require tooling?
No, it's a self-leveling formula. No tooling is needed.
What’s the recommended joint design?
Joint width should allow movement capability. For joints wider than 1 inch, don’t exceed 1/2 inch in depth.
| Brand | Sika |
|---|---|
| Manufacturer | Sika |
