PPG AEROSPACE/PRC DESOTO ADHESION SEALANT SEMKIT 654 DK RED MIL-S-8784 REV B CL B-1/2 6OZ PR1428B1-2

PPG Aerospace PRC DeSoto® PR1428B1-2 is a dark red, two-component adhesion sealant supplied in a 6 oz Semkit® for precise mixing and clean application in production or repair settings. Formulated to MIL-S-8784 Rev B Class B-1/2, it creates a resilient bonding interface on metals, composites, and primed surfaces, enhancing the performance of subsequent fuel-tank or fuselage sealants. Its elastomeric chemistry maintains flexibility under vibration, temperature variation, and pressurization while resisting aviation fuels, hydraulic fluids, lubricants, and common solvents. Widely applied in structural joints, access panels, and aircraft skin assemblies, it promotes long-term adhesion integrity in harsh operational environments.