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About Sealant Flexibility
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Sealants
These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.
Elongation and joint compression/expansion tolerance indicate flexibility. For joints between dissimilar materials and in environments with wide temperature fluctuation, choose a sealant with a higher elongation or joint compression/expansion tolerance. For high-wear applications, choose a harder sealant for the most abrasion resistance.
Container | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Tensile Strength, psi  | Hardness | Temp. Range, °F | For Joining | Choose a Color | Each | |
Sika Sikaflex Polyurethane | |||||||||||||
| 221 | 10.1 | Cartridge | 60 min. | 3 days | 500% | -12.5% to 12.5% | 260 | Medium Soft (Durometer 40A) | -40° to 190° | Metal Metal to Plastic Metal to Rubber Plastic Plastic to Rubber Rubber Masonry | 6937T2 | 000000 | |
| Primer for Sika Sikaflex Polyurethane Sealants (3.4-oz Bottle) | 7442A31 | Each | 000000 |