Description
Sikasil® WS-605 S is a durable, neutral-curing silicone sealant with a high movement capability and excellent adhesion to a wide range of substrates.
Product Benefits
- Meets requirements of ISO 11600 25 LM F & G, ASTM C 920 (class 50), ASTM C 1248, TT-S00230C, TT-S001543A, DIN 18540, DIN 18545 (group E)
- SNJF and Marca N certified(SNJF F&G 25 E)
- Outstanding UV and weathering resistance
- Does not stain areas adjacent to the joint
- Adheres well to glass, metals, coated / painted metals, plastics and wood
- Provided with CE-mark according to EN 15651-1:2012, F EXT-INT CC 25LM, (F EXT-INT 25LM for transparent), EN 15651-2:2012, G CC 25LM, certified by Control Body 1119
Areas of Application
Sikasil® WS-605 S can be used for weatherproofing and sealing applications where durability under severe conditions is required. It is particularly suited as a weather seal for structural glazing, curtain walling and windows. This product is suitable for professional experienced users only. Tests with actual 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) |
Various colors available |
| Cure mechanism |
Moisture-curing |
| Cure type |
Neutral |
| Density (uncured) (CQP 006-4) |
1,03 kg/liter
1,49 kg/liter |
| Non-sag properties (CQP 061-4 / ISO 7390) |
< 2 mm |
| Application temperature |
5 °C – 40 °C |
| Skin time3 (CQP 019-2) |
25 minutes |
| Tack-free time3 (CQP 019-1) |
120 minutes |
| Curing speed (CQP 049-1) |
See diagram 1 |
| Shore A-hardness (CQP 023-1 / ISO 868) |
20 |
| Tensile strength (CQP 036-1 / ISO 37) |
1,0 N/mm² |
| Elongation at break (CQP 036-1 / ISO 37) |
800 % |
| Tear propagation resistance (CQP 045-1 / ISO 34) |
4,0 N/mm |
| 100 % modulus (CQP 036-1 / ISO 37) |
0,3 N/mm² |
| Movement accommodation capability (ASTM C 719) |
± 50 % |
| Thermal resistance (CQP 513-1)
4 hours
1 hour |
180 °C
200 °C
220 °C |
| Service temperature
|
-40 – 150 °C |
| Shelf life (storage below 25 °C) (CQP 016-1 |
12 months |
|
|
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 Department of Sika Industry. All other sealants have to be approved by Sika before using them in combination with Sikasil® WS605 S. Where two or more different reactive sealants are used, allow the first to cure completely before applying the next. Do not use Sikasil® WS-605 S on pre-stressed polyacrylate and polycarbonate elements as it may cause environmental stress cracking (crazing). The compatibility of gaskets, backer rods and other accessory materials with Sikasil® WS-605 S must be tested in advance. Joints deeper than 15 mm have to be avoided. The above information is offered for general guidance only. Advice on specific applications will be given on request.
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