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Sika Sikasil 728 SL Limestone 29oz 416947
Sikasil-728 SL is a self-leveling ultra low-modulus silicone in a Limestone 29 oz cartridge for highway and parking-garage joints. It holds +100/-50% movement and skins in approximately 60 minutes without tooling on level work.
- Self-leveling silicone for horizontal highway and deck joints
- ASTM C-920 Class 100/50 with +100/-50% movement
- Ultra low Shore A 3 to 5 for extreme joint movement
$55.97
Availability:
In stock
( 36 Available )
Sikasil-728 SL
Sikasil-728 SL is a self-leveling, one-component, ultra low-modulus, neutral-cure silicone sealant for highway, parking garage, and plaza deck joints. This Limestone 29 oz cartridge (part 416947) meets ASTM C-920 Type S, Grade P, Class 100/50 with +100/-50% movement, Shore A 3 to 5, and approximately 1,100% elongation. It skins in approximately 60 minutes, is tack-free in approximately 115 minutes at 77 F, needs no tooling on level joints, and bonds many substrates including aged asphalt and concrete without priming.
Key Features
- One-component self-leveling ultra low-modulus neutral-cure silicone
- Meets ASTM C-920 Type S, Grade P, Class 100/50, Use T, M, G, A, O
- Movement capability +100% / -50%
- Shore A 3 to 5 with approximately 1,100% elongation
- Skin time approximately 60 minutes; tack-free approximately 115 minutes at 77 F
- Works without priming on aged asphalt and concrete for most surfaces
Applications
- Works in highway and bridge joints
- Parking garages, plaza decks, and driveways
- Stadiums, expansion joints, and saw-cut joints
- Runways and tarmacs needing jet-fuel resistance
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikasil-728 SL |
| Part no. | 416947 |
| Unit | 29 oz cartridge |
| Color | Limestone |
| Chemistry | Self-leveling neutral-cure silicone |
| ASTM | C-920 Type S, Grade P, Class 100/50 |
| Movement | +100% / -50% |
| Shore A | 3–5 |
| Elongation | Approximately 1,100% |
| Skin / tack-free | Approximately 60 / 115 min at 77 F |
| VOC | 29 g/L |
Product documents: Sikasil-728 SL Product Data Sheet (PDF)
Frequently Asked Questions
What movement capability does Sikasil-728 SL hold?
+100% extension / -50% compression under ASTM C-719, matching ASTM C-920 Class 100/50.
What skin and tack-free times should crews plan for with Sikasil-728 SL?
Skin time is approximately 60 minutes and tack-free time is approximately 115 minutes at 77 F and 50% R.H.
What joints suit Sikasil-728 SL on the slab?
Highway joints, bridges, parking garages, plaza decks, driveways, stadiums, expansion joints, and saw-cut joints.
What hardness does cured Sikasil-728 SL reach?
Shore A 3 to 5 after 7 days, an ultra low modulus for extreme dynamic movement.
What priming does Sikasil-728 SL need on asphalt and concrete?
It bonds most substrates without priming, including aged asphalt and concrete. Confirm adhesion on atypical surfaces.
What size is the Sikasil-728 SL cartridge on this page?
This page is the Limestone 29 oz cartridge, part 416947.
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