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3M Aerospace AC-236 Class B-2 Fuel Tank & Fuselage Sealant

3M Aerospace AC-236 Class B-2 Fuel Tank & Fuselage Sealant

Prevent leaks around the joints and rivets of the integral fuel tank of an aircraft with the use of 3M Aerospace AC-236 Class B-2 fuel tank and fuselage sealant from SkyGeek. This two-part manganese dioxide-cured, liquid polysulfide polymer paste is easy to apply to your aircraft by extrusion gun, injection gun or spatula. AC-236 effortlessly bonds to most metal substrates and is perfect for sealing integral fuel tanks, repairing integral fuel tanks and sealing fuselages. Once cured, this compound is resistant to aviation gasoline, jet fuel and other corrosive substances. It can also withstand harsh weather conditions, stress and extreme temperatures.

Features
  • Two-part manganese dioxide-cured, liquid polysulfide polymer fuselage and fuel tank sealant
  • Applications include sealing integral fuel tanks, repairing integral fuel tanks and sealing fuselages
  • Excellent resistance to jet fuel and aviation gasoline
  • Additional resistance to chemicals and petroleum products
  • Stays flexible and retains bond strength on most metal substrates
  • Maintains durability under weathering, stress and extreme temperature conditions
  • Apply thixotropic paste with extrusion gun, intrusion gun or spatula
  • Outstanding tooling properties
  • Minimum application life: 2 hours
  • Typical tack-free time: 24 hours
  • Typical cure time: 48 hours
For more information about this sealant along with its catalyst, we urge you to read the MSDS on this page. For features, specifications, application, and other details, please read this Technical Data Sheet.
Use Instructions
Two-Part Sealant Cartridges:

  1. Holding the cartridge, grasp the dasher rod and pull back approximately one inch

  2. Insert the ramrod into the hollow of the dasher rod, break the piston loose, and inject about 1/3 of the contents into the cartridge

    Note: Do not inject all of catalyst in one location. Distribute evenly throughout base material


  3. Repeat steps 2 and 3 until all the contents of the rod are emptied into the cartridge. Remove the ramrod

  4. Mix for the required number of strokes (hand mixing) or for the required amount of time (machine mixing) indicated in the kit instructions

  5. When mixing is complete, remove bottom cap

  6. Pull the dasher rod back to the neck of the cartridge, grasp the cartridge firmly at the neck, unscrew the dasher rod and remove

  7. Screw the nozzle into the cartridge, insert into the extrusion gun and use as required. For hand extrusion, press the used dasher rod against the plunger to force the material from the cartridge

Storage

The shelf life of AC-236 Class B is 9 months from date of packaging, when stored at temperatures below 80 degrees F in its original container.

Mixed AC-236 Class B may be stored under refrigeration as follows: 15 days at -10 degrees F, 30 days at -40 degrees F.

It is important to remember that freezing, storing and thawing procedures reduce application life. Also, frozen storage will reduce application life by varying amounts depending on the storage temperature and length of storage time. All aspects of storage, freezing and thawing should be planned carefully and it is not recommended to mix and freeze with less than half an hour application time.

Health and Safety Precautions

AC-236 Class B sealant is safe to use and apply when recommended precautions are followed. Before using this product, read and understand the Material Safety Data Sheet (MSDS), which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available on request. Avoid overexposure. Obtain medical care in case of extreme overexposure.

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Part Number
051141-58374
Size
3.5 oz Kit
Price
$22.45
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Certification
Material Safety Data Sheet:
MSDS1
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Part Number
051141-57908
Size
Pint Kit
Price
$45.13
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Certification
Material Safety Data Sheet:
MSDS1
Code: UN1866 | Class: 3 | Group: II - Click Here for Details
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Part Number
051141-57909
Size
Quart Kit
Price
$90.25
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Certification
Material Safety Data Sheet:
MSDS1
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