DOWSIL™ 3363 Insulating Glass Sealant
Features &Benefits
1. Economical joint sizes in high strength IG applications
2. High design strength (0.21 MPa) allowing joint size reduction up to 30%
3. Enhanced productivity with reduced joint dimensions
4. European Technical Approval (ETA13/0359)
5. Suitable for gas-filled triple glazed units and gas-filled double glazed units
6. Structural capability as secondary sealant for insulating glass in structural glazing applications Outstanding adhesion to a wide range of substrates including coated and reflective glasses, aluminum and steel spacers, and a variety of plastics
7. Meets EN 1279 part 4 and 6 and EN 13022
8. Tested according to EN 15434
9. Meets the requirements of CEKAL
10. Low water absorption
11. Excellent temperature stability: -50°C to 150°C
12. Non-corrosive cure
13. Fast curing time
14. Outstanding resistance to ozone and ultraviolet (UV) radiation
15. High modulus which limits the stress on the primary sealant and makes it particularly suited for gas-filled insulating glass units
Applications
1. DOWSIL™ 3363 Insulating Glass Sealant is a high strength secondary two-part silicone sealant specifically designed for high strength applications, where conventional sealants with lower strength would lead to increased joint sizes. It enables economical joint sizes in highly demanding insulating glass (IG) applications such as: high wind in tall buildings, hurricane loads, cold-bent glass or high impact loads such as bomb blast. Smaller joint dimensions can be filled faster and therefore lead to productivity enhancements.
2. DOWSIL™ 3363 Insulating Glass Sealant is ideal as a secondary sealant for triple and double glazed units and meets EN 1279 requirements for gas-filled IG.
3. DOWSIL™ 3363 Insulating Glass Sealant can be used in IG applications for structurally glazed facades. It is UV resistant, provides long-term durability and excellent adhesion to glass and IG spacers.
How to Use
Mixing and Dispensing Instructions：DOWSIL™ 3363 Insulating Glass Sealant should be mixed in a ratio of 10:1 base to curing agent by weight. At this mix ratio, the sealant typically exhibits a working time of 5–10 minutes and allows units to be handled within two hours. Slight variations in mixing ratio can be tolerated, but these should not exceed 11:1 to 9:1 by weight to ensure minimum properties are obtained. The sealant is compatible with most of DOWSIL™ neutral curing sealants. Please contact our technical services department for more information.
Mixing and Dispensing Instructions：To achieve the best mechanical properties of DOWSIL™ 3363 Insulating Glass Sealant, it is recommended that the base and curing agent are thoroughly mixed using an airless mixing system found on most existing commercially available two-part silicone dispensing machines.
Equipment Cleaning：When not being used it is recommended that the dispensing equipment be purged either with the uncatalyzed base, or flushed with a suitable solvent such as DOWSIL™ 3522 Cleaning Solvent Concentrated. If cured sealant has built up inside the equipment it is recommended to flush the equipment for the appropriate time with DOWSIL™ 3522 Cleaning Solvent Concentrated. This solvent dissolves cured silicone sealant and provides optimum cleaning performance.
Typical Properties
| Test1 | Property | Unit | Result |
| DOWSIL™ 3363 Insulating Glass Sealant Base: as supplied | |||
| Color and consistency | White, viscous paste | ||
| Specific gravity | 1.38 | ||
| DOWSIL™ 3363 Insulating Glass Sealant Curing Agent: as supplied | |||
| Color and consistency | Thick black paste | ||
| Specific gravity | 1.05 | ||
| Viscosity (60 s-1) | Pa.s | 7.5 | |
| As mixed | |||
| Color and consistency | Black non-slump paste | ||
| Working time (25°C, 50% R.H.) | minutes | 5–10 | |
| Snap time (25°C, 50% R.H.) | minutes | 10–30 | |
| Specific gravity | 1.33 | ||
| Corrosiveness | Non-corrosive | ||
| ISO 8339 | Tensile strength | MPa | 1.5 |
| EN 1279-6 | Durometer hardness, Shore A | 60 | |
| ETAG 002 | Design stress in tensionDesign stress in static shearElastic modulus in tension or compression | MPaMPaMPa | 0.210.0114.8 |
| EN 1279-4 | Water vapor permeability (2.0 mm film) | g/m2/24h | 18 |
| EN 1279-4 | Gas permeability | g/(m2h) | 0.46 |
Packaging Information
Lot matching of DOWSIL™ 3363 Insulating Glass Sealant Base and DOWSIL™ 3363 Insulating Glass Sealant Curing Agent is not required. DOWSIL™ 3363 Insulating Glass Sealant Base is available in 250 kg drums. DOWSIL™ 3363 Insulating Glass Sealant Catalyst is available in 25 kg pails.
Limitations
This product is neither tested nor represented as suitable for medical or pharmaceutical uses.
