PPG Aerospace PR-1428 Class B Low Adhesion Sealant, 6oz Semkit MIL-S-8784 REV B PR1428B1-2 6 OZ

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.