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About Sealant Flexibility
More
High-Strength Concrete Joint Sealants
Seal concrete joints in high-traffic areas—these sealants stand up to heavy wear and tear, such as steel wheel traffic. They're non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, sealants are RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. These sealants are best suited to joints between similar materials that aren't exposed to wide temperature fluctuation. For high-wear applications, choose a harder sealant for the most abrasion resistance.
Container | For Max. Crack | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Wd. | Dp. | Temp. Range, °F | For Joining | Color | Each | |
Sika Sikasil Silicone | ||||||||||||||
| 728 NS | 29 | Cartridge | 25 min. | 7 days | 1,000% | -50% to 100% | Soft (Durometer 10A) | 1" | 1/2" | -80° to 350° | Metal, Plastic, Rubber, Composites, Masonry, Wood | Limestone | 0000000 | 000000 |
| Primer for Sika Sikasil Sealant (8-oz. Bottle) | 0000000 | Each | 000000 |
Textured Concrete Joint Sealants
The textured finish matches concrete surfaces. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. These sealants are best suited to joints between similar materials that aren't exposed to wide temperature fluctuation. For high-wear applications, choose a harder sealant for the most abrasion resistance.
When Sika Sikaflex Polyurethane requires a primer, for best results use Primer 260 on metal and Primer 449 on plastic and rubber.
Primer 260 cannot be sold to CT, DC, DE, MA, MD, ME, NJ, NY, PA, RI, UT, VT; Northern VA; Los Angeles County, CA; Orange County, CA; Riverside County, CA; or San Bernardino County, CA, due to regulatory limits on VOCs (volatile organic compounds).
Container | For Max. Crack | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Wd. | Dp. | Temp. Range, °F | For Joining | Choose a Color | Each | |
Sika Sikaflex Polyurethane | ||||||||||||||
| Textured | 10.1 | Cartridge | 6 hrs. | 7 days | Not Rated | -25% to 25% | Soft (Durometer 30A) | 1/2" | 1/2" | -40° to 170° | Metal, Plastic, Rubber, Composites, Glass, Masonry | 000000 | 000000 | |