This two-part polysulfide sealant is designed for aircraft windshields, canopies, and windows. It cures quickly and features a non-sag formula, making it suitable for both vertical and horizontal applications. Compatible with acrylic, glass, and polycarbonate materials, it is ideal for exterior mold line uses in aerospace settings.
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WARNING: This product can expose you to chemicals including CARBON BLACK (AIRBORNE, UNBOUND PARTICLES OF RESPIRABLE SIZE [= 10 MICROMETERS]), LEAD and SILICA, CRYSTALLINE (AIRBORNE PARTICLES OF RESPIRABLE SIZE) which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Overview
3M™ aerospace sealant AC-251 is our two part, manganese dioxide cured, polysulfide based sealant for aircraft windshields, canopies and windows. This quick curing product is easy-to-tool and the non-sag formula holds its shape on vertical and horizontal surfaces. AC-251 is effective for acrylic, glass and polycarbonate aircraft transparencies and exterior mold line applications.
Features & Benefits
Maintains flexibility and bond strength for reliable performance on aircraft transparencies
Contains no added solvents to prevent crazing on transparent surfaces
Formulated to resist UV degradation
Black color provides clean exterior mold lines
Non-sag formula is easy-to-mix and apply by injection dispenser or spatula for fast application time
Qualified to multiple aerospace material specifications
Specifications
Series: AC-251
Container Size: 1 pt
Form: Paste
Color: Black
Odor/Scent: Sulfuric
Composition: 55 to 65% Polysulfide Rubber, 30 to 40% Calcium Carbonate, <0.99% Toluene, <0.5% Carbon Black,<0.5% Quartz Silica
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DISCLAIMER: Product information provided “as is.” Boeing may add, change, discontinue or remove this information at any time. Product photos may not be exact match to product delivered. Seeterms & conditions.
