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3M AC-251 B-2 Aerospace Sealant 3.5oz Kit

Silmid P/N: P0190337
No Stock - Standard lead time 66 business days
Please order in multiples of 24

3M AC-251 Class B-2 Aerospace Sealant is a two-part, quick curing, polysulfide based canopy and windshield sealant.

Technical Information

  • UN Number 3082 CL9
  • Commodity Code 32141010
  • Country of Origin United States
DISCONTINUING: This product is due to be discontinued. For information regarding alternative products please contact us on or call +44 (0)1675 432850.

Data Sheets

Download the 3M AC-251 B -2 technical data sheet (TDS) and the 3M AC-251 B -2 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 Properties

Pack Size
3.5oz Kit
Product Colour
Black | Black
Manufacturer Name
Manufacturer Part Number
Sealant Class
Class B
Application Time
2 Hours

Product Information

This product is formulated for sealing acrylic, glass, and polycarbonate aircraft canopies and windshields. It contains no solvents, does not craze and quickly cures, exhibiting excellent adhesion and resistance to UV and weather exposure. 3M AC-251 Class B Sealant has a thixotropic, nonsag consistency and can be readily applied with a spatula or extrusion gun on vertical surfaces.


  • Canopy and windshield sealant
  • Exterior moldline applications

Additional Content

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3M Brochures
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Shipping information

Orders over £100 placed online will now qualify for FREE UK Mainland delivery*

**orders placed through the office will incur additional charges.** 

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.