Dow Corning- Q4-2805 Fluorosilicone Sealant

DOW CORNING® Q4-2805Fluorosilicone channel sealant. One part, fuel- and oil-resistant compound. Primarily used as groove injection sealants for aircraft fuel tanks. Also suitable for various sealing applications that require a non-curing sealant. The sealant is injected directly by air gun into the grooves of integral fuel tank systems during fabrication or maintenance. Upon exposure to common fuels, this sealant will swell slightly, tightening the seal during service. This characteristic is especially beneficial when, as a result of aerodynamic heating, expansion of fuel and fuel vapours may cause internal tank pressure.

• Superior sealing characteristics under exposure to fuels and oils
• Easily injected and reinjected
• Maintains consistency over wide temperature range from -55°C to +200°C
• 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 vapours in temperatures up to +200°C
• Contains flow-control particles
• Excellent flow characteristics provide faster injection at reduced pressures
• Meets MIL-S-85334(AS)

*Actual product colours may vary from on-screen and printer representations.