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-236 Class A-1/2 Fuel Tank & Fuselage Sealant
3M Aerospace AC-236 Class A-1/2 Fuel Tank & Fuselage Sealant

3M Aerospace AC-236 Class A-1/2 Fuel Tank & Fuselage Sealant

Effectively seal, bond and protect aircraft fuselages and fuel tanks with 3M Aerospace AC-236 Class A-1/2 fuel tank and fuselage sealant from SkyGeek. Use a brush to apply this two-component, liquid polysulfide polymer sealant to your aircraft. Once cured, AC-236 is resistant to aviation gasoline, jet fuel, petroleum products and other chemicals that are commonly used in the aerospace industry. This sealant maintains its performance, flexibility and bond strength on many metal substrates. Some of these include aluminum, stainless steel and steel. It withstands extreme temperatures as well as weathering and stress.

Approvals, References and Specifications
  • SAE Specification: AMS-S-8802 Type 2 Class A-1/2
  • U.S. Military Specification: MIL-S-8802 Type 2 Class A-1/2
  • LES 1039 BU
  • BS 4657
  • BS 25146

Features

  • Two-component, liquid polysulfide polymer fuselage sealant
  • Can be applied using a brush
  • Excellent resistance to aviation gasoline and jet fuel
  • Resistant to chemicals and petroleum products found in the aerospace industry
  • Can be used on aluminum, stainless steel, steel and more
  • Retains flexibility and bond strength on most metal substrates
  • Withstands extreme temperatures, weathering and stress
  • Outstanding tooling properties
  • Use for sealing integral fuel tanks, repairing integral fuel tanks and sealing fuselages
  • Service temperature range: -65 degrees Fahrenheit to 250 degrees Fahrenheit
  • Color: Base - white, Accelerator - black
  • Mix ratio: 100 base:10 accelerator (by weight)
  • 87 percent non-volatile content
  • Base viscosity (RVF Brookfield #6 spindle @ 10rpm, 77 degrees Fahrenheit): 300 poise
  • Minimum application life: -hour
  • Typical tack-free time: 7 hours
  • Typical cure time: 24 hours
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 A is 9 months from date of packaging, when stored at temperatures below 80 degrees F in its original container.

Mixed AC-236 Class A 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 A 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.

Specifications
AMS-S-8802 - Qualified

LES 1039 BU - Qualified

BS 4657 - Qualified

BS 25146 - Qualified

Typical Physical Application Properties

  • Color: Base - White, Accelerator - Black

  • Mix Ratio: 100 base / 10 accelerator (by weight)

  • Nonvolatile Content: 87%

  • Base Viscosity (RVF Brookfield #6 spindle @ 10rpm, 77 degrees F): 300 poise
  • Application Life and Cure Time

    (At 75 degrees F, 50% relative humidity)

    A-1/2

  • Minimum Application Life*: 1/2 hour

  • Typical Tack-Free Time**: 7 hours

  • Typical Cure Time***: 24 hours
  • A-2

  • Minimum Application Life*: 2 hours

  • Typical Tack-Free Time**: 24 hours

  • Typical Cure Time***: 48 hours
  • *Application Life refers to the length of time that mixed compound remains at a consistency suitable for application with roller or brush. Application life is always measured at a standard temperature of 75 degrees F with a relative humidity level of 50%. In general, for every 20 degrees F rise in temperature, the application life is halved; and for every 20 degree 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 L-LP-690 standard low density polyethylene film.

    ***Cure time is defined as the length of time it takes AC-236 Class A sealant to reach 30A hardness. It depends on three factors: remaining application life, temperature and relative humidity. To a certain extent, the temperature/humidity factors for application life also apply to curing. To accelerate the curing process, apply heat up to (but not more than) 120 degrees F.

    Typical Physical and Performance Properties of Cured Compound After 14 Days at 77 degrees F / 50% Relative Humidity (when tested per AMS-S-8802)

  • Color: Gray

  • Specific Gravity: 1.64

  • Hardness: 60 Shore "A"

  • Low Temperature Flexibility: No cracking, checking or adhesion loss when tested at -65 degrees F (-54 degrees C)

  • Service Temperatures: -65 degrees F to +250 degrees F (-55 degrees C to +121 degreesC)

  • Thermal Rupture Resistance: Retains pressure of 10 psi at 250 degrees F with negligible deformation

  • Corrosion: None

  • Repairability: 40 piw to itself and other MIL-S-8802 qualified sealants

  • Weight Loss and Flexibility: No cracking when bent 180 degrees over a 1/8" mandrel. No more than 6% loss of the sealant compound after fluid immersion
  • Typical Values of AC-236 Class A to AMS-S-8802

    Peel Strength**

    Substrate MIL-S-5059

    Conditioning:

  • 7 days at 140 degrees F in JRF = 53 lbs/ / 100% (Average Peak Load / % Cohesion)

  • 7 days at 140 degrees F in JRF/SW = 63 lbs. / 100% (Average Peak Load / % Cohesion)
  • Substrate MIL-C-27725

    Conditioning:

  • 7 days at 140 degrees F in JRF = 53 lbs/ / 100% (Average Peak Load / % Cohesion)

  • 7 days at 140 degrees F in JRF/SW = 63 lbs. / 100% (Average Peak Load / % Cohesion)
  • Substrate MIL-P-23377

    Conditioning:

  • 7 days at 140 degrees F in DI Water = 63 lbs/ / 100% (Average Peak Load / % Cohesion)

  • 7 days at 140 degrees F in Salt Water = 63 lbs. / 100% (Average Peak Load / % Cohesion)
  • **Specification requirement - 20 lbs. / 100%, wire mesh

    View DetailsEnable JS
    Part Number
    051141-57869
    Size
    2 oz Kit
    Spec
    AMS-S-8802D Class A-1/2, Type II
    Price
    $20.53
    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1866 | Class: 3 | Group: III - Click Here for Details
    Country of Origin: USA
    View DetailsEnable JS
    Part Number
    051141-57871
    Size
    3.5 oz Kit
    Spec
    AMS-S-8802D Class A-1/2, Type II
    Price
    $22.45
    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1866 | Class: 3 | Group: III - Click Here for Details
    Country of Origin: USA
    View DetailsEnable JS
    Part Number
    051141-57875
    Size
    Pint Kit
    Spec
    AMS-S-8802D, Class A-1/2, Type II
    Price
    $45.13
    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1263 | Class: 3 | Group: III - Click Here for Details
    Country of Origin: USA
    View DetailsEnable JS
    Part Number
    051141-57876
    Size
    Quart Kit
    Spec
    AMS-S-8802C Class A-1/2, Type II
    Price
    $90.25 (ea.)
    (Sold in increments of 9)

    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1866 | Class: 3 | Group: III - Click Here for Details
    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