DOWSIL™ 121 Structural Glazing Sealant
A fast-curing structural silicone sealant for use in structural and weatherseal applications. With a fast cure and 1:1 mix ratio, DOWSIL™ 121 Structural Glazing Sealant answers the challenges facade contractors and manufacturers face with slow-curing, one-part sealants, mixing challenges of multipart sealants, and limited movement capability of tapes.
Product info
Benefits
- Approved for structural and weatherseal applications
- Primerless adhesion to glass, alodine and anodized aluminum
- Adhesion to DOWSIL™ brand structural sealants for reglazing applications
- Adhesion and structural strength achieved in 24–48 hours
- Meets ASTM C719 Class 25 (G, A, O)
- Meets ASTM C1184 Structural Sealant Specification
Substrate Type
- Alodine Aluminum
- Aluminum
- Anodized Aluminum
- Glass
Colours
Black
Dark Grey
Technical Information
| Where to use | Exterior |
| Paintable | No |
| Time to cure | 24 hours |
| Time to cure disclaimer | DOWSIL™ 121 Structural Glazing Sealant cures in deep section within 24 hours and generally achieves full adhesion within 48 hours. However, full cure time depends on joint design, substrate type, temperature and humidity. |
| Container Type | Cartridge |
| Shelf life | 12 month |
| Sizes | Sealant is available in kits of 400 ml net fill (2 x 200 mL)/13.5 fl. oz. net fill (2 x 6.8 fl. oz.) cartridges |
| Application method | Pneumatic Dispensing Tool |
Application
Application Instructions
Contact our expert team for advice, training and application instructions for this product!