Skygeek View Cart SkyGeek Facebook SkyGeek Twitter SkyGeek Blog SkyGeek YouTube View All Brands Best Sellers New Arrivals Skygeek View Cart
HomeShop SuppliesAdhesives, Tapes, & SealantsSealantsFuel Tank Sealant3M Aerospace AC-240 Class B-1/2 Fuel Tank & Fuselage Sealant
3M Aerospace AC-240 Class B-1/2 Fuel Tank & Fuselage Sealant

3M Aerospace AC-240 Class B-1/2 Fuel Tank & Fuselage Sealant

Repair, seal and protect the integral fuel tank and fuselage on your aircraft with 3M Aerospace AC-240 Class B-1/2 fuel tank and fuselage sealant from SkyGeek. This sealant can prevent fuel leakages as well as protecting your aviation equipment from corrosion. The two-part, polysulfide-based sealant is manganese dioxide-cured and solvent-free product. After the low-sag material has been applied by spatula or extrusion gun, it cures quickly and lasts through extreme temperatures, stress and weathering.

Features
  • Two-part, polysulfide-based sealant
  • Manganese dioxide-cured, solvent-free product
  • Features a long application life and quick cure time
  • Resistant to chemicals and petroleum products common to the aerospace industry
  • Forms a strong and flexible bond on most metal substrates
  • Can be used on aluminum, titanium, steel, stainless steel, glass and more
  • Many coatings last through stress, weathering and extreme temperatures
  • Low-sag consistency easily applied with spatula or extrusion gun on vertical surfaces
  • Minimum application life: hour
  • Typical tack-free time: 4 hours
  • Typical cure time: 4 hours
  • Mix ratio: 100 base:10 accelerator (by weight and volume)
  • Gray color
  • Specific gravity: 1.61
  • Service temperature range: -65 degrees Fahrenheit to 250 degrees Fahrenheit
  • Shelf life: 9 months, when stored at temperatures below 80 degrees Fahrenheit

Consider that this product has a shelf life of about nine months when deciding on how much sealant you will need.

Read the 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-240 Class B is 9 months from date of packaging, when stored at temperatures below 80 degrees F in its original container.

Mixed AC-240 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-240 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.

View DetailsEnable JS
Part Number
051141-57940
Size
25 Gram Kit
Spec
AMS-S-8802D Class B-1/2, Type II
Price
$9.12
Hover for Qty Pricing
Qty
Certification
Material Safety Data Sheet:
MSDS1
Country of Origin: USA
View DetailsEnable JS
Part Number
051141-57938
Size
2 oz Kit
Spec
AMS-S-8802D Class B-1/2, Type II
Price
$23.22
Hover for Qty Pricing
Qty
Certification
Material Safety Data Sheet:
MSDS1
Country of Origin: USA
View DetailsEnable JS
Part Number
051141-57941
Size
3.5 oz Kit
Spec
AMS-S-8802D Class B-1/2, Type II
Price
$25.76
Hover for Qty Pricing
Qty
Certification
Material Safety Data Sheet:
MSDS1
Country of Origin: USA
View DetailsEnable JS
Part Number
051141-57948
Size
Pint Kit
Spec
AMS-S-8802D Class B-1/2, Type II
Price
$50.02
Hover for Qty Pricing
Qty
Certification
Same Day Ship
Material Safety Data Sheet:
MSDS1
Country of Origin: USA
View DetailsEnable JS
Part Number
051141-57949
Size
Quart Kit
Spec
N/A
Price
$100.02
Hover for Qty Pricing
Qty
Certification
Material Safety Data Sheet:
MSDS1
Country of Origin: USA
Related Products
NewsletterKeep Up-to-Date with SkyGeekStore InfoCustomer Care
Sign Up For Our Newsletter

© 2017. SkyGeek.com has Aircraft Oil, Aircraft Tools, and more for all your aviation supply needs.
Secure Shopping
Shopper Award
skygeek.com has a Shopper Approved rating of 4.7/5 based on 28467 ratings and reviews