Aircraft Spruce & Specialty Co.
Corona, CA | Chicago, IL
Wasilla, AK | Peachtree City, GA
Brantford, ON Canada
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3M AC-251 B-2 3.5 OZ - CANOPY / WINDSHIELD SEALANT
MFR Model# 70005201846
Overview
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AC-251 Black Class B are two-part, quick curing, polysulfide based canopy and windshield sealants. These products are formulated for sealing acrylic, glass, and polycarbonate aircraft canopies and windshields. AC-251 Black Class B Sealants contain no solvent and do not craze. The sealants quickly cure and exhibit excellent adhesion and resistance to UV and weather exposure.
3.5oz Fill Premixed Syringe |
Features
- AC-251 Black Class B Sealants have a thixotropic, non-sag consistency
- They can be readily applied with a spatula or extrusion gun on vertical surfaces
Specifications
- MAT-587 Qualified (B-1/2,B-2)
Documents
Reviews
Worthless on a Cessna. Cleaned and prepped IAW directions and had the entire top windshield strip come off and start beating the aircraft right on takeoff. Wont stick to lexan or aluminum. Save your money and use conventional windshield silicone.
Q&A
The material is not considered haz-mat. The surface must be clean and free of any contamination. Primer is not required.
Per the tech data sheet in the Documents tab show the B-2 has a 2 hour working time. Please review the TDS for more details on this product.
That is tough to answer because the size of windshields would vary aircraft to aircraft. Most customers buy 2-3 when installing windows.
They would require a special extrusion gun to apply or you can use the included application tip. The gun part number would be 09-38520 for example.
