DOWSIL Q4-2805 NON-CURING FLUOROSILICONE CHANNEL SEALANT
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Aviation-Fuel, Fuel, and Oil Resistance
- Non-Curing, Catalyst-Free Formulation
- 55 to 200 deg C Service Range
Product Description
DOWSIL™ Q4-2805 Fluorosilicone Channel Sealant is a one-part, non-curing fluorosilicone compound designed to provide superior sealing characteristics under exposure to fuels and oils. Primarily used as a groove injection sealant for aircraft fuel tanks, it is formulated to withstand immersion in fuels and exposure to fuel vapors at elevated temperatures up to 200°C. The sealant maintains its consistency across a wide temperature range and is essentially unaffected by shock, vibration, and thermal cycling.
Key features
- Fuel and oil resistance: Withstands immersion in aviation fuels and exposure to fuel vapors up to 200°C.
- Wide temperature stability: Maintains physical consistency and reliable sealing performance from -55°C to +200°C.
- Non-curing formulation: Contains no catalyst or curing agent, allowing the sealant to be easily injected and reinjected during routine maintenance.
Applications / Suitable for
- Groove injection sealants for aircraft fuel tanks
- Various industrial sealing applications requiring a non-curing, fuel-resistant compound
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | White | - | Visual |
| Components | 1-part | - | - |
| Specific Gravity | 1.37 | - | at 25 °C |
| Service Temperature Range | -55 to 200 | °C | - |
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service Temperature Range | -55 to +200 | °C | - |
| Jet Reference Fuel Swell | 30 | % | 7 day immersion at 80°C |
| JP-4 Fuel Swell | 12 | % | 7 day immersion at 80°C |
| JP-5 Fuel Swell | 12 | % | 7 day immersion at 80°C |
