3M - Aerospace Black Standard, Class B-1/2 Spec Canopy & Windshield Sealant | 051141-57986 Hysol EA9390 or heavily oxidized

or heavily oxidized

The adjustable headband and removable ear cushions allow for easy customization and maintenance

or for flight instructors wanting to help their students reduce the number of hours needed to complete an instrument training program

Short-Field

3M - Aerospace Black Standard, Class B-1/2 Spec Canopy & Windshield Sealant | 051141-57986 Hysol EA9390 or heavily oxidized3M Aerospace Black Standard, Class B 1 2 Spec Canopy & Windshield Sealant 051141 57986 3M Aerospace Sealant AC 251 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. They contain no solvents and do not craze. The sealants quickly cure and exhibit excellent adhesion and resistance to UV and weather exposure.