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3M AC-251 B-1/2 Aerospace Sealant 3.5oz Cartridge

Silmid P/N: AC251BA6OZ
No Stock - Standard lead time 183 business days
Please order in multiples of 24

AC-215 Class B is a two-part, polysulfide access door sealant for faying surfaces where easy separation of joined surfaces is required.

Technical Information

  • Commodity Code 32141010
  • Country of Origin United States

Data Sheets

Download the 3M AC-251 B-1/2 Aerospace Sealant 3.5oz Cartridge technical data sheet (TDS) and the 3M AC-251 B-1/2 Aerospace Sealant 3.5oz Cartridge safety data sheet (SDS) from Silmid today. Once you have logged in or signed up, the datasheet will be visible for download if one is available.

Product Information

It is a highly thixotropic reddish paste which can easily be applied with a spatula, putty knife or caulking gun. The cured AC-215 sealant has low adhesion and forms a tough, rubbery gasket that molds well to surface irregularities.


  • Access door sealant for aerospace metallic structure and pressurized vehicles
  • Gaskets for removable parts
  • Strippable fillets


  • MIL-S-8784 - GSA Approved
  • TAPS 1163 Ty IV- Qualified
  • 299-947-074 - Qualified (Pre-mixed & Frozen)

Shipping information

International delivery (door to door delivery) is available for selected countries worldwide. Shipping will be automatically calculated based on the weight, location and hazardous nature of the goods. Customers can also choose ex works to arrange their own collection.

Please refer to our delivery page for more information.