{"id":6133,"date":"2026-09-29T12:32:40","date_gmt":"2026-09-29T10:32:40","guid":{"rendered":"https:\/\/asa-ss.com\/quest-ce-quun-mastic-detancheite-aeronautique-guide-dintroduction\/"},"modified":"2026-09-29T15:07:32","modified_gmt":"2026-09-29T13:07:32","slug":"quest-ce-quun-mastic-detancheite-aeronautique-guide-dintroduction","status":"publish","type":"post","link":"https:\/\/asa-ss.com\/fr\/quest-ce-quun-mastic-detancheite-aeronautique-guide-dintroduction\/","title":{"rendered":"Qu&rsquo;est-ce qu&rsquo;un mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique ? Guide d&rsquo;introduction"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6133\" class=\"elementor elementor-6133 elementor-6080\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e25dfd2 e-flex e-con-boxed e-con e-parent\" data-id=\"e25dfd2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d5adf4c elementor-widget elementor-widget-heading\" data-id=\"d5adf4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Qu'est-ce qu'un mastic d'\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique ? Guide d'introduction <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04f2b8e elementor-widget elementor-widget-text-editor\" data-id=\"04f2b8e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Demandez \u00e0 la plupart des personnes ext\u00e9rieures au secteur ce que signifie \u00ab mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique \u00bb et vous obtiendrez probablement un haussement d&rsquo;\u00e9paules. M\u00eame dans la fabrication a\u00e9ronautique, c&rsquo;est un terme utilis\u00e9 tous les jours sans toujours \u00eatre r\u00e9ellement expliqu\u00e9. Voici donc la version courte, puis la version d\u00e9taill\u00e9e.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73cb493 elementor-widget elementor-widget-heading\" data-id=\"73cb493\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c0 quoi sert r\u00e9ellement un mastic d'\u00e9tanch\u00e9it\u00e9 ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6943b52 elementor-widget elementor-widget-text-editor\" data-id=\"6943b52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Un mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 comble les jeux et assure l&rsquo;\u00e9tanch\u00e9it\u00e9. Dans sa forme la plus simple, c&rsquo;est sa fonction : il est appliqu\u00e9 sur les joints, les lignes d&rsquo;assemblage, les \u00e9l\u00e9ments de fixation et les bords de panneaux afin de maintenir le carburant, l&rsquo;eau et l&rsquo;air l\u00e0 o\u00f9 ils doivent se trouver, et de les emp\u00eacher de p\u00e9n\u00e9trer l\u00e0 o\u00f9 ils ne doivent pas. Il se distingue d&rsquo;un adh\u00e9sif structural, qui sert \u00e0 assembler les pi\u00e8ces. Le mastic n&rsquo;est g\u00e9n\u00e9ralement pas porteur : il prot\u00e8ge la structure sous-jacente de l&rsquo;humidit\u00e9, des contaminants et de la corrosion.  <\/p><p>O\u00f9 intervient-il concr\u00e8tement sur un avion ? Presque partout :<strong> rivets et autres \u00e9l\u00e9ments de fixation, joints de r\u00e9servoirs de carburant, trappes d&rsquo;acc\u00e8s, pare-brise et verri\u00e8res, ou encore cloison pare-feu entre le moteur et la cabine.<\/strong> Un seul avion monocouloir peut embarquer plusieurs centaines de kilogrammes de mastic, r\u00e9partis sur des milliers de points d&rsquo;application. Il ne s&rsquo;agit donc pas d&rsquo;une simple finition, mais d&rsquo;un \u00e9l\u00e9ment essentiel de l&rsquo;assemblage.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e9e803c elementor-widget elementor-widget-image\" data-id=\"e9e803c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"752\" height=\"420\" src=\"https:\/\/asa-ss.com\/wp-content\/uploads\/2026\/09\/ChatGPT-Image-Sep-29-2026-01_11_43-PM-752x420.jpg\" class=\"attachment-motta-post-thumbnail-large size-motta-post-thumbnail-large wp-image-6134\" alt=\"Technicien de maintenance a\u00e9ronautique nettoyant et pr\u00e9parant les rivets d\u2019une aile d\u2019avion avant l\u2019application du mastic.\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c3f533 elementor-widget elementor-widget-spacer\" data-id=\"8c3f533\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b7438f elementor-widget elementor-widget-heading\" data-id=\"0b7438f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pourquoi ce n'est pas comparable \u00e0 un mastic de bricolage<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9df090a elementor-widget elementor-widget-text-editor\" data-id=\"9df090a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Un mastic polyvalent destin\u00e9 \u00e0 une salle de bains ou \u00e0 un encadrement de fen\u00eatre est soumis \u00e0 des conditions bien moins exigeantes. Un mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique doit r\u00e9sister \u00e0 : <\/p><ul><li>des variations de temp\u00e9rature allant du froid en altitude \u00e0 la chaleur des compartiments moteur<\/li><li>des vibrations constantes pendant des d\u00e9cennies de cycles de vol<\/li><li>un contact direct avec le carbur\u00e9acteur et les fluides hydrauliques<\/li><li>des contraintes de masse o\u00f9 chaque gramme est pris en compte<\/li><li>des approbations de la FAA, de l&rsquo;EASA et, souvent, des sp\u00e9cifications propres au constructeur a\u00e9ronautique<\/li><\/ul><p>R\u00e9unissez toutes ces contraintes et vous obtenez une cat\u00e9gorie de produits qui n&rsquo;a pratiquement rien \u00e0 voir avec les mastics du b\u00e2timent, m\u00eame si le m\u00eame mot peut laisser penser qu&rsquo;ils sont comparables.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16edd0c elementor-widget elementor-widget-heading\" data-id=\"16edd0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Deux questions pour d\u00e9terminer le mastic dont vous avez besoin<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12f4f80 elementor-widget elementor-widget-text-editor\" data-id=\"12f4f80\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vous d\u00e9butez dans la sp\u00e9cification ou l&rsquo;application de mastics ? Deux questions sont d\u00e9terminantes : <\/p><ol><li><strong>Comment est-il appliqu\u00e9 ?<\/strong> Certains mastics sont suffisamment fluides pour \u00eatre appliqu\u00e9s au pinceau ; d&rsquo;autres n\u00e9cessitent un pistolet et une buse. Nous d\u00e9taillons ce point dans le guide suivant, consacr\u00e9 aux classes A, B et C des mastics. <\/li><li><strong>De quoi est-il compos\u00e9 ?<\/strong> Polysulfure, polyur\u00e9thane, silicone, fluorosilicone : chaque chimie pr\u00e9sente une r\u00e9sistance diff\u00e9rente au carburant, \u00e0 la chaleur et aux UV. C&rsquo;est le sujet de notre guide consacr\u00e9 \u00e0 la chimie des mastics. <\/li><\/ol><p>Une erreur sur l&rsquo;un ou l&rsquo;autre de ces points ne signifie pas seulement qu&rsquo;il faudra recommencer le travail. Vous pouvez vous retrouver avec une pi\u00e8ce qui ne satisfait pas aux exigences de navigabilit\u00e9. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59b70f6 elementor-widget elementor-widget-image\" data-id=\"59b70f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"706\" height=\"420\" src=\"https:\/\/asa-ss.com\/wp-content\/uploads\/2026\/09\/images-9-1-706x420.jpg\" class=\"attachment-motta-post-thumbnail-large size-motta-post-thumbnail-large wp-image-6135\" alt=\"Technicien appliquant du mastic avec une buse sur un rivet noir d\u2019une surface a\u00e9ronautique blanche.\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5de6ef0 elementor-widget elementor-widget-spacer\" data-id=\"5de6ef0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fa68386 elementor-widget elementor-widget-heading\" data-id=\"fa68386\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L'application est aussi importante que le choix du mastic<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0e0ec10 elementor-widget elementor-widget-text-editor\" data-id=\"0e0ec10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>M\u00eame parfaitement choisi, un mastic mal appliqu\u00e9 reste un d\u00e9faut. La pr\u00e9paration des surfaces, le choix de la buse adapt\u00e9e au joint, le respect du rapport de m\u00e9lange des mastics bicomposants et l&rsquo;utilisation du produit pendant sa vie en pot, avant le d\u00e9but de la polym\u00e9risation, d\u00e9terminent tous la performance r\u00e9elle de l&rsquo;\u00e9tanch\u00e9it\u00e9. C&rsquo;est pourquoi l&rsquo;outillage d&rsquo;application constitue un domaine d&rsquo;expertise \u00e0 part enti\u00e8re, et non un simple d\u00e9tail \u00e0 traiter une fois le mastic s\u00e9lectionn\u00e9.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8beb89a elementor-widget elementor-widget-heading\" data-id=\"8beb89a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">La suite de la s\u00e9rie<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74daf4c elementor-widget elementor-widget-text-editor\" data-id=\"74daf4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Cet article ouvre une courte s\u00e9rie consacr\u00e9e aux fondamentaux des mastics a\u00e9ronautiques : classification, chimie, application manuelle ou automatis\u00e9e et outillage associ\u00e9. Si le sujet est nouveau pour vous, chaque guide reprend l\u00e0 o\u00f9 le pr\u00e9c\u00e9dent s&rsquo;est arr\u00eat\u00e9. <\/p><p style=\"text-align: left;\"><a href=\"https:\/\/asa-ss.com\/wp-content\/uploads\/2024\/10\/Products-Technical-Data-Aerospace-Sealant-Application-ASA.pdf\"><span class=\"elementor-button-content-wrapper\"><span class=\"elementor-button-text\">T\u00e9l\u00e9charger le manuel des donn\u00e9es techniques des produits<\/span><\/span><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Qu&rsquo;est-ce qu&rsquo;un mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique ? Guide d&rsquo;introduction Demandez \u00e0 la plupart des personnes ext\u00e9rieures au secteur ce que signifie \u00ab mastic d&rsquo;\u00e9tanch\u00e9it\u00e9 a\u00e9ronautique \u00bb et vous obtiendrez probablement un haussement d&rsquo;\u00e9paules. M\u00eame dans la fabrication a\u00e9ronautique, c&rsquo;est un terme utilis\u00e9 tous les jours sans toujours \u00eatre r\u00e9ellement expliqu\u00e9. Voici donc la version courte, puis [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":6135,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[137],"tags":[],"class_list":["post-6133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Qu\u2019est-ce qu\u2019un mastic a\u00e9ronautique ? 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