Hump Seal Repair Kits
Hump Seal Repair Kits
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.
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.
Your Aerospace Products, Just a Click Away
Explore our range of aerospace solutions available for purchase online. Shop anytime, anywhere and enjoy seamless ordering and delivery.
Accordion collapsed
PPG makes it easy to repair a hump seal in the field with hump seal repair kits designed for windshields on commercial and general aviation aircraft. The kits contain everything needed to repair a hump seal on a windshield, including a new PR-1425CF chromate-free* sealant by PPG. Because PR-1425CF sealant cures in less than half the time of PR-1425 sealant, hump seal repairs can be done overnight on the line or during a minor maintenance check in the hangar.
Hump seal repair kits have been created for windshields on specific aircraft. PPG has assembled everything needed to complete a repair on an installed windshield, including polysulfide sealant, a moisture seal forming tool designed for that windshield, adhesion promoter, tape, razor blades and gloves. The kits come in easy-to-carry boxes so repairs can be made overnight on the line or during a minor maintenance check in the hangar.
Hump seal repair procedures for most windshields are outlined in the applicable Aircraft Maintenance Manual (AAM) or PPG Abbreviated Component Maintenance Manual (ACMM). PPG recommends inspecting the windshield moisture seal every four months or every 1,000 flight hours, whichever occurs first, for signs of erosion, degradation or cracking.
*Chromium is not intentionally added in the formulation of this product. PPG€™s €œchrome-free€ statement is based on our knowledge of the product formulation.
Hump seal repair kits have been created for windshields on specific aircraft. PPG has assembled everything needed to complete a repair on an installed windshield, including polysulfide sealant, a moisture seal forming tool designed for that windshield, adhesion promoter, tape, razor blades and gloves. The kits come in easy-to-carry boxes so repairs can be made overnight on the line or during a minor maintenance check in the hangar.
Hump seal repair procedures for most windshields are outlined in the applicable Aircraft Maintenance Manual (AAM) or PPG Abbreviated Component Maintenance Manual (ACMM). PPG recommends inspecting the windshield moisture seal every four months or every 1,000 flight hours, whichever occurs first, for signs of erosion, degradation or cracking.
*Chromium is not intentionally added in the formulation of this product. PPG€™s €œchrome-free€ statement is based on our knowledge of the product formulation.