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3M Aerospace AC-137 Sealant Adhesion Promoter

3M Aerospace AC-137 Sealant Adhesion Promoter

Increase aircraft sealant adhesion and service life with the use of 3M Aerospace Sealant AC-137 Sealant Adhesion Promoter from SkyGeek. This sealant can be used on polycarbonate, acrylic, glass, metal and solvent-resistant surfaces. This no-mixing-necessary, solvent-based formula augments bonding for polysulfide sealants applied to windshields, canopies and windows without damaging vulnerable substrates. The same formula is available in clear and also in red, when coverage requires visual inspection. Optimal performance is achieved when used in conjunction with 3M Aerospace Sealant AC-251.

Approvals, References and Specifications
  • MAT-624 Type II - Qualified
Use Instructions
Surface Preparation

For maximum adhesion, clean surfaces with appropriate solvent (reclaimed solvents should not be used) to remove dirt, grease and processing oils just prior to application. Use approved cheesecloth, or equivalent, that is free of oil and soap. Always turn cloth frequently to prevent contamination. Always pour solvent on the cloth to avoid contaminating the solvent supply.

Clean only a small area at a time, quickly wiping it dry with another clean cloth. Turn cloth frequently, before the solvent evaporates, to prevent redeposition of oil, wax or other contaminants.

Application Instructions

AC-137 Clear may be applied to solvent-cleaned surfaces with a clean brush or gauze. Excess should be wiped off while still wet with clean gauze sponges. Wait atleast 15 minutes before applying sealant. Surface preparation and adhesion promoter application procedure should be repeated if sealant is not applied within four hours.

Storage

The shelf life of AC-137 Clear is 12 months from date of manufacture between 40 degrees F and 90 degrees F in the original unopened bottles. Storage at lower temperatures increases shelf life. AC-137 Clear is hygroscopic and will become cloudy due to hydrolysis. The product should be disposed of when it becomes cloudy.

Health and Safety Precautions

AC-137 adhesion promoter 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.

Features
  • Solvent-based sealant adhesion promoter
  • Available in red as a visual aid to ensure coverage of application
  • Available in clear-ideal for transparent substrate
  • Best with 3M Aerospace Sealant AC-251
  • Polysulfide sealant adhesion enhancement with no damage to windshields, canopies or windows
  • Handy single solution with no mixing
  • Quick initial adhesion build rate of polysulfide sealant to substrate
  • Compound of surface activator agent with mixed solvents for stellar bonding
  • Reduced time to adhesion
  • Gauze or brush application
  • Crazing prevention on transparent surfaces
  • Extends sealant service life
  • Resistant to common aircraft industry chemicals exposure
  • Drying Time: Less than one minute
Specifications
MAT-624 Type II - Qualified

Typical Physical and Application Properties

  • Color: Clear

  • Flammability: Flammable, Flash Point 55 degrees F Setaflash closed cup

  • Drying Time: Less than one minute

  • Overcoat Time: Between 15 minutes and four hours

  • Crazing: On Annealed Acrylics - None (3000 psi / 30 min / 77 degrees F). On Polycarbonate - None (3000 psi / 30 min / 77 degrees F)

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    Part Number
    051141-57848
    Size
    1 oz Bottle
    Spec
    3M Standard, Type I
    Price
    $23.18
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    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1170 | Class: 3 | Group: II - Click Here for Details
    Country of Origin: United States
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    Part Number
    051141-57849
    Size
    2 oz Bottle
    Spec
    3M Standard Spec
    Price
    $33.12
    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1170 | Class: 3 | Group: II - Click Here for Details
    Country of Origin: United States
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    Part Number
    051141-57844
    Size
    2 oz Bottle
    Spec
    3M Standard, Type II
    Price
    $33.12(Jar)
    (Sold in increments of 12)

    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1170 | Class: 3 | Group: II - Click Here for Details
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    Part Number
    051141-57845
    Size
    16 oz Bottle
    Spec
    3M Standard, Type II
    Price
    $115.51
    Hover for Qty Pricing
    Qty
    Certification
    Material Safety Data Sheet:
    MSDS1
    Code: UN1170 | Class: 3 | Group: II - Click Here for Details
    Country of Origin: United States
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