Description
Sikasil® SG-20 is a neutral-curing silicone adhesive which combines mechanical strength with high elongation. It adheres excellent to a wide range of substrates widely used in structural glazing applications.
Product Benefits
- Meets requirements of EOTA ETAG 002 (ETA-richtlijn), EN 13022, ASTM C 1184
- Fire rated (EN 11925-2 / DIN 4102-B1)
- Outstanding UV and weathering resistance
- Bonds excellent to glass, metals, coated metals, plastics and woo
- Structural silicone adhesive according to ETAG 002, DoP 61161179, certified by Factory Production Control Body 0757, certificate 0757-CPD-596-10-001 R1e, and provided with the CEmark
Areas of Application
Sikasil® SG-20 can be used for structural sealant glazing, bonding of solar modules and other highdemanding industrial applications. This product is suitable for professional experienced users only. Tests with original substrates and conditions have to be performed to ensure adhesion and material compatibility.
Technical data at 23 ºC and 50 % RV
| Chemical base |
1-C silicone |
| Color (CQP1001-1) |
Black, grey S6, white S3 |
| Cure mechanism |
Moisture-curing |
| Cure type |
Neutral |
| Density (uncured) (CQP 006-4) |
1.37 kg/l |
| Non-sag properties (CQP 061-4 / ISO 7390) |
Circa < 2 mm |
| Application temperature |
5 °C – 40 °C |
| Skin time2 (CQP 019-2) |
Circa 15 minutes |
| Tack-free time2 (CQP 019-1) |
Circa 180 minutes |
| Curing speed (CQP 049-1) |
See diagram 1 |
| Shore A-hardness (CQP 023-1 / ISO 868) |
Circa 39 |
| Tensile strength (CQP 036-1 / ISO 37) |
Circa 2,2 N/mm² |
| Elongation at break (CQP 036-1 / ISO 37) |
Circa 450 % |
| Tear propagation resistance (CQP 045-1 / ISO 34) |
Circa 7 N/mm |
| 100% modulus (CQP 036-1 / ISO 37) |
Circa 0,9 N/mm² |
| Movement accommodation (ASTM C 719) |
± 25 % |
| Thermal resistance (CQP 513-1) short term |
4 hours / 200 °C
1 hours / 220 °C |
| Service temperature |
-40 – 150 °C |
| Shelf life (storage below 25 °C) (CQP 016-1) |
9 months |
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Application Limits
Most Sikasil® WS, FS, SG, IG, WT, AS and other engineering silicone sealants manufactured by Sika are compatible with each other and with SikaGlaze® IG sealants. For specific information regarding compatibility between various Sikasil® and SikaGlaze® products please contact the Technical Service Department of Sika Industry. All other sealants have to be approved by Sika before using them in combination with Sikasil® SG-20. Where two or more different reactive sealants are used, allow the first to cure completely before applying the next. Sikasil® SG, IG and WT sealants and adhesives may only be used in structural glazing or window bonding applications by experienced professionals and after a detailed examination and written approval of the corresponding project details by the Technical Service Department of Sika Industry. The compatibility of gaskets, backer rods, setting blocks and other accessory materials with Sikasil® SG-20 must be tested in advance.
Order
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