PPG Hump Seal Repair Kits are specialized maintenance kits designed for repairing or replacing the "hump seals" on aircraft transparencies, particularly on cockpit windows or canopies. These kits provide the necessary materials and components to restore the sealing effectiveness of the hump seal area without requiring full transparency replacement.
About Hump Seal Repair Kits
An aircraft windshield's sealant system is the most critical element in extending windshield service life. The outboard moisture, or weather, seal protects against moisture ingress, which can cause delamination, interlayer degradation and windshield heating system damage. Commonly called a hump seal because of its appearance, this seal also acts as an aerodynamic smoother and covers the outboard edge of the transparency. Because it is subjected to the effects of wind and rain erosion and UV exposure, a hump seal can degrade over time. It is important to maintain the seal.