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Precision work calls for a precision sealant, which is why SkyGeek offers DOWSIL™ Q4-2805 Fuel Tank Sealant. The white fluorosilicone channel sealant is sold in a 212-gram reverse plunger cartridge that delivers precision and reliable sealing with every use. Designed for high-performance environments, this sealant is a go-to solution for aviation professionals, engineers and anyone who needs a strong, flexible seal in fuel-exposed areas. Plus, it’s fuel-resistant so you know it’s strong.
The reverse plunger cartridge design is revolutionary and completely eliminates fighting with the dispenser. Gone are the days of gobs of wasted sealant and clumsy application. In its place are smooth beads and controlled dispensing so your sealant lands exactly where you want it, not three inches to the left. This formula is fluorosilicone-based, giving it superior resistance to all kinds of aviation hazards like fuels, oils, solvents and more. Use DOWSIL™ Q4-2805 Fuel Tank Sealant in the types of environmental extremes that make other sealants wave the white flag.
Its white color gives it a clean finish that looks professional even in the guts of a machine. Whether you’re sealing aircraft channels, access panels, or fuel systems, Q4-2805 keeps its integrity where lesser sealants would start to crumble. It’s non-corrosive, non-slumping, and non-annoying to apply. What more could you want?
So, if you’re working in aerospace, automotive or industrial settings where chemical-resistant sealant is a must, DOWSIL™ Q4-2805 Fuel Tank Sealant is your new best friend. Just don’t lend it to your coworker — once they see how well it works, you might not get it back.
Features
- Superior sealing characteristics under exposure to fuels and oils
- Easily injected and reinjected
- Maintains consistency over wide temperature range from -55oC to +200oC
- Non-curing
- Good tack adhesion
- Essentially unaffected by shock, vibration and thermal cycling
- Contains no catalyst or curing agent
- Withstands immersion in fuels and exposure to fuel vapors in temperatures up to +200o
- Contains flow-control particles
- Excellent flow characteristics provide faster injection at reduced pressures
- Meets MIL-S-85334(AS)
Physical Properties
- Physical Nature: Putty-like
- Color: White
- Relative density at 25oC: 1.37
- Extrusion force: 91kg
- 7 day immersion at 80oC in:
- Jet reference fuel swell: 30%
- JP-4 swell: 12%
- JP-5 swell: 12%
- 7 day immersion at 80oC, plus 24 hours dry at 90oC:
- Jet reference fuel weight loss: 2.5%
- JP-4 weight loss: 1.0%
- JP-5 weight loss: 1.0%
- 2024 clad aluminum: Excellent; adhesive strength exceeds cohesive strength
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