- 1 roll
- Composition: preformed silicone elastomer
- Extremely low modulus
- Provides a leak-free transition seal
- Preformed silicone seal for weatherproofing applications
Product Overview
Dow 123 Silicone Seal (formerly Dow Corning 123 Silicone Seal) is a preformed, ultra-low modulus silicone extrusion that is bonded to substrates using Dow 791 Silicone Perimeter Sealant or Dow 795 Silicone Building Sealant. Dow 123 is easy-to-install and can be used in both new and remedial construction applications. Dow 123 Silicone Seal Custom Designs H.C. are specifically intended for use in repair of failed construction joints and glazing details due to design error, field failure or when the life span of sealants and gaskets has expired. Dow 123 Silicone Seals can be used in a variety of applications such as an economical, high-performance alternative to cutting-out and recaulking existing failed weatherproofing sealants, restoring joints on EIFS at both the EIFS-to-EIFS joints and window perimeter joints, an aluminum splice in high-performance window and curtainwall applications, a high-performance flexible flashing material ideal for maintenance crews, a uniform-looking parapet or coping joint, a leak-free transition seal and a seal for leaking skylights. Dow 123 Silicone Seal is an extremely low-modulus alternative to wet sealants and have a high-movement seal capable of +200/-75 percent joint movement. Dow 123 silicone is a high-shear movement seal capable of handling specified live loads, wind sway and seismic movements in a properly designed joint. Dow 123 Silicone Seal's performance is SWRI-validated and its ability to provide a complete weatherseal system when used with Dow AllGuard Silicone Elastomeric Coating. Dow 123 Silicone Seal is available in custom designs to allow easier application and smoother transitions.
Selection
| SKU | Color | Width | Length |
|---|---|---|---|
| 123W-1 | White | 1" | 100 ft. |
| 123BRZ-1 | Bronze | 1" | 100 ft. |
| 123BL-1 | Black | 1" | 100 ft. |
| 123GRY-1 | Gray | 1" | 100 ft. |
| 123L-1 | Limestone | 1" | 100 ft. |
| 123BL-112 | Black | 1-1/2" | 100 ft. |
| 123BRZ-112 | Bronze | 1-1/2" | 100 ft. |
| 123GRY-112 | Gray | 1-1/2" | 100 ft. |
| 123L-112 | Limestone | 1-1/2" | 100 ft. |
| 123W-112 | White | 1-1/2" | 100 ft. |
| 123BL-2 | Black | 2" | 100 ft. |
| 123BRZ-2 | Bronze | 2" | 100 ft. |
| 123GRY-2 | Gray | 2" | 100 ft. |
| 123CHP-2 | Champagne | 2" | 100 ft. |
| 123L-2 | Limestone | 2" | 100 ft. |
| 123S-2 | Sandstone | 2" | 100 ft. |
| 123W-2 | White | 2" | 100 ft. |
| 123BL-212 | Black | 2-1/2" | 100 ft. |
| 123GRY-212 | Gray | 2-1/2" | 100 ft. |
| 123BL-3 | Black | 3" | 100 ft. |
| 123BRZ-3 | Bronze | 3" | 100 ft. |
| 123GRY-3 | Gray | 3" | 100 ft. |
| 123L-3 | Limestone | 3" | 100 ft. |
| 123W-3 | White | 3" | 100 ft. |
| 123S-3 | Sandstone | 3" | 100 ft. |
| 123BL-4 | Black | 4" | 100 ft. |
| 123BRZ-4 | Bronze | 4" | 100 ft. |
| 123GRY-4 | Gray | 4" | 100 ft. |
| 123L-4 | Limestone | 4" | 100 ft. |
| 123BL-6 | Black | 6" | 100 ft. |
| 123GRY-6 | Gray | 6" | 100 ft. |
| 123W-6 | White | 6" | 100 ft. |
| 123BL-12 | Black | 12" | 50 ft. |
| 123S-1 | Sandstone | 1" | 100 ft. |
| 123S-112 | Sandstone | 1-1/2" | 100 ft. |
| 123BRZ-5 | Bronze | 5" | 100 ft. |
| 123GRY-5 | Gray | 5" | 100 ft. |
| 123BL-5 | Black | 5" | 100 ft. |
| 123S-4 | Sandstone | 4" | 100 ft. |
| 123L-6 | Limestone | 6" | 100 ft. |
| 123BRZ-6 | Bronze | 6" | 100 ft. |
| 123W-212 | White | 2-1/2" | 100 ft. |
| 123GRY-12 | Gray | 12" | 50 ft. |
| 123RB-4 | Rustic Brick | 4" | 100 ft. |
| 123W-4 | White | 4" | 100 ft. |
Product Specifications
| Brand | Dow |
|---|---|
| Series | 123 |
| Composition | Preformed silicone elastomer sealant |
| Indoor / Outdoor usage | Both |
| Paintable | No |
| Modulus | Ultra low |
| Durometer Hardness, Shore A | 25 points |
| Tensile strength | 40 psi |
| Elongation | 400% |
| Tear strength, die B | 100 ppi |
| Joint movement capability | +200 / -75 percent |
| Peel strength | 25 pli |
| Application to each side of the joint - rough substrate | 8 sealant cartridges per 100 foot roll with a 1/4" bead size |
| Application to each side of the joint -smooth substrate | 4 sealant cartridges per 100 foot roll with a 1/8" bead size |
