AC Tech AC-350 A-1/2 Intermediate Density Fuel Tank & Fuselage Sealant Base - Quick Cure - 25 Gram

This fast-cure, intermediate density two-component, manganese dioxide cure, brushable, polysulfide fuel tank and fuselage sealant has outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry.AC-350 Class A maintains its flexibility and bong strength on most metal substrates such as aluminum, titanium, steel, stainless steel, and many coatings under extremes in temperature, weathering and stress. The mixed compound is a pourable liquid easily applied by brush or roller. It has excellent tooling properties.

Applications

• Sealing integral fuel tanks
• Repairing integral fuel tanks
• Sealing fuselages

Storage

The shelf life of AC-350 Class A is 9 months from date of packaging, when stored at temperatures below 80°F in its original unopened container.

SIN #834-100

MMS-332 - Qualified
AMS-S-8802 - Qualified A-1/2 and A-2
AMS3276 - Qualified A-2
Dassault
DGQT 1.7.0.115 - Qualified A-1/2 and A-2

Typical Physical and Application Properties Color Base Accelerator White Dark Brown Mixing Ratio 100 base / 10 accelerator (by weight) Nonvolatile Content 88% Base Viscosity (RVF Brookfield #6 Spindle @ 10 rpm, 77°) 250 - 500 poise

Application Life and Cure Time Min. Application Life* Typical Tack-Free Time** Typical Cure Time*** Tested @ 75°F, 50% R.H. A-1/2 1/2 hour 3 hours 4 hours A-1 1 hour 5 hours 8 hours A-2 2 hours 8 hours 12 hours

* Application life refers to the length of time the mixed compound remains at a consistency suitable for application with brush or roller. Application life is always measured as a standard temperature of 77°F with a relative humidity level of 50%. In general, for every 20°F rise in temperature, the application life is halved; and for every 20°F drop, it is doubled. High humidity levels during the mixing process will shorten application life.

** Tack-free time is the length of time after which a mixed sealant will no longer tightly adhere to LP-P-690 standard low density polyethylene film.

*** Cure time is defined as the length of time it takes AC-350 sealant to reach 30A hardness. It depends on three factors: remaining application life, temperature and relative humidity. The temperature/humidity factors for application life also apply to curing. To accelerate the curing process, apply heat up to (but not more than) 140°F.

Typical Physical and Performance Properties* Color Light Gray Specific Gravity 1.4 Hardness 48-53 durometer "A" Low Temperature Flexibility No cracking, checking or adhesion loss when tested at 65°F (-54°C) Service Temperatures -65° to +250°F (-55° to +121°C) and short term to 360°F (182°C) Thermal Rupture Resistant Conforms Corrosion None Repairability 35 piw / 100% cohesive failure

* Of cured compound after 14 days @ 77°F/50% RH