{"id":7425,"date":"2026-07-28T08:08:54","date_gmt":"2026-07-28T14:08:54","guid":{"rendered":"https:\/\/www.hitechseals.com\/?page_id=7425"},"modified":"2026-08-11T08:05:56","modified_gmt":"2026-08-11T14:05:56","slug":"o-ring-design-considerations","status":"publish","type":"page","link":"https:\/\/www.hitechseals.com\/fr\/ressources\/guide-de-conception-des-joints-toriques\/o-ring-design-considerations\/","title":{"rendered":"Consid\u00e9rations de conception des joints toriques"},"content":{"rendered":"
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Sommaire<\/span><\/h2>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Section transversale du joint torique<\/a><\/td>\r\n<\/tr>\r\n
Types de gorges pour joints toriques<\/a><\/td>\r\n<\/tr>\r\n
Allongement du DI & interf\u00e9rence du DE<\/a><\/td>\r\n<\/tr>\r\n
R\u00e9duction de la section<\/a><\/td>\r\n<\/tr>\r\n
Compression<\/a><\/td>\r\n<\/tr>\r\n
Remplissage de gorge<\/a><\/td>\r\n<\/tr>\r\n
Jeu d’extrusion<\/a><\/td>\r\n<\/tr>\r\n
Limites d’extrusion<\/a><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/web3_vc_content][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785424819403{margin-top: 0px !important;margin-bottom: 10px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1784919139484{margin-top: 0px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbo-ringcross-section\u00a0\u00bb]\r\n

Section du joint torique<\/span><\/h2>\r\nLe DI et le DE d’une gorge de joint torique sont principalement influenc\u00e9s par le diam\u00e8tre de la surface d’accouplement de la tige ou du piston et de l’al\u00e9sage. Bien que la section du joint torique puisse sembler arbitraire, il existe des avantages distincts \u00e0 utiliser un joint torique de section plus grande ou plus petite.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784908854184{margin-top: 40px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/3″ css=\u00a0\u00bb.vc_custom_1784910737898{border-radius: 10px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Avantages des sections plus petites<\/strong>\r\n
    \r\n \t
  • Plus compact<\/li>\r\n \t
  • Plus l\u00e9ger<\/li>\r\n \t
  • Moins cher, surtout pour les \u00e9lastom\u00e8res plus co\u00fbteux comme le fluorocarbone (FKM) ou le fluorosilicone (FVMQ, FMQ)<\/li>\r\n \t
  • Moins d’usinage requis pour les gorges usin\u00e9es, car les gorges sont plus petites<\/li>\r\n \t
  • R\u00e9sistance accrue \u00e0 la d\u00e9compression explosive<\/li>\r\n<\/ul>\r\n[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/3″][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Avantages des sections plus grandes<\/strong>\r\n
      \r\n \t
    • Moins sujet \u00e0 la d\u00e9formation permanente par compression<\/li>\r\n \t
    • Moins de gonflement volumique en liquide sur une base de pourcentage<\/li>\r\n \t
    • Permet une tol\u00e9rance plus grande tout en maintenant une compression et un taux de compression acceptables sur toute la plage d’empilement<\/li>\r\n \t
    • Moins sujet aux fuites dues \u00e0 la contamination : salet\u00e9, peluches, rayures, etc.<\/li>\r\n<\/ul>\r\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784902654912{margin-top: 35px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1784234232340{margin-top: 35px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbo-ring-gland-types\u00a0\u00bb]\r\n

      Types de gorges pour joints toriques<\/span><\/h2>\r\nLes joints toriques sont principalement utilis\u00e9s pour emp\u00eacher la perte d’un fluide ou d’un gaz. Cependant, les joints toriques peuvent \u00eatre utilis\u00e9s comme joints anti-poussi\u00e8re, courroies d’entra\u00eenement ou sur des arbres rotatifs. La plupart des joints toriques peuvent \u00eatre class\u00e9s dans l’une des trois dispositions ou configurations ci-dessous.\r\n\r\n\r\n\r\n
      Configuration de piston\r\n\"\"<\/td>\r\nConfiguration de tige\r\n\"\"<\/td>\r\nConfiguration de type face\r\n\"\"<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n
      Joint torique<\/span>
      \"\"<\/td>\r\n      		Piston<\/span>
      \"\"<\/td>\r\n      		Tige<\/span>
      \"\"<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nDI = Diam\u00e8tre int\u00e9rieur<\/em><\/span>\r\nDE = Diam\u00e8tre ext\u00e9rieur<\/em><\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784902688625{margin-top: 35px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb3\/4″ css=\u00a0\u00bb.vc_custom_1784235885825{margin-top: 35px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbid-stretch-and-od-interference\u00a0\u00bb]\r\n

      Allongement du DI & interf\u00e9rence du DE<\/span><\/h2>\r\n\r\n\r\n\r\n\r\n
      Pour les applications d\u2019\u00e9tanch\u00e9it\u00e9 de piston hydrauliques et pneumatiques<\/strong><\/td>\r\n<\/td>\r\nPour les applications d\u2019\u00e9tanch\u00e9it\u00e9 de tige hydrauliques et pneumatiques<\/strong><\/td>\r\n<\/tr>\r\n
      Le DI du joint torique doit \u00eatre \u00e9tir\u00e9 entre 2 % et 5 % pour les applications dynamiques et entre 2 % et 8 % pour les applications statiques. Pour les joints toriques dont le DI est inf\u00e9rieur \u00e0 20 mm, ce n’est pas toujours possible, ce qui peut entra\u00eener une plage d’allongement plus large. Pour minimiser cette plage et l’allongement maximal, il est n\u00e9cessaire de minimiser la tol\u00e9rance du diam\u00e8tre de la gorge du piston et d’avoir une exigence moins stricte pour l’allongement minimal du joint torique. Dans les applications dynamiques, il est important de maintenir l’allongement maximal \u00e0 5 % ou moins pour \u00e9viter des effets n\u00e9fastes sur la performance d’\u00e9tanch\u00e9it\u00e9.<\/td>\r\n<\/td>\r\nLe DE du joint torique doit \u00eatre \u00e9gal ou sup\u00e9rieur au diam\u00e8tre de la gorge de la tige pour cr\u00e9er une interf\u00e9rence sur le DE du joint torique. Le DE du joint torique ne doit pas d\u00e9passer 3 % du diam\u00e8tre de la gorge de la tige pour les joints toriques dont le DI est sup\u00e9rieur \u00e0 250 mm, ou 5 % pour les joints toriques dont le DI est inf\u00e9rieur \u00e0 250 mm. Pour les joints toriques dont le DI est inf\u00e9rieur \u00e0 20 mm, ce n’est pas toujours possible en raison de probl\u00e8mes de tol\u00e9rance, ce qui peut entra\u00eener une plus grande interf\u00e9rence du DE du joint torique.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784902703964{margin-top: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1784303212572{margin-top: 35px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbreduction-in-cross-section\u00a0\u00bb]\r\n

      R\u00e9duction de la section<\/span><\/h2>\r\nSi le DI du joint torique est \u00e9tir\u00e9, la section du joint torique diminuera. Le tableau suivant indique les sections de joint torique r\u00e9sultant de divers pourcentages d’allongement du DI.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785532518012{margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ offset=\u00a0\u00bbvc_col-lg-offset-0 vc_col-md-offset-0 vc_col-sm-offset-0″][vc_raw_html css=\u00a0\u00bb\u00a0\u00bb]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[\/vc_raw_html][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3″][vc_column_text css=\u00a0\u00bb.vc_custom_1784918207025{margin-top: 35px !important;margin-bottom: 10px !important;}\u00a0\u00bb el_id=\u00a0\u00bbcompression\u00a0\u00bb]\r\n

      Compression<\/span><\/h2>\r\nLa compression est la diff\u00e9rence entre la section originale du joint torique et la section finale du joint torique une fois install\u00e9.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784904003773{margin-bottom: 20px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/3″ css=\u00a0\u00bb.vc_custom_1784303260278{margin-top: 35px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Compression = Section – Profondeur de gorge<\/span><\/strong>\r\n\r\nCeci peut g\u00e9n\u00e9ralement \u00eatre exprim\u00e9 en pourcentage :\r\n\r\nCompression de la section du joint torique (%) = (Compression \/ Section) x 100<\/strong><\/span>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/3″][vc_single_image image=\u00a0\u00bb7421″ img_size=\u00a0\u00bblarge\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1784903573159{margin-top: 35px !important;}\u00a0\u00bb][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784902782606{margin-top: 20px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1784303286590{margin-top: 20px !important;}\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbgland-fill\u00a0\u00bb]\r\n

      Remplissage de gorge<\/span><\/h2>\r\nLe remplissage de la gorge est le pourcentage de la gorge occup\u00e9e par le joint torique. Il est calcul\u00e9 en divisant la surface de la section transversale (SST) du joint torique par la surface de la section transversale de la gorge.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785873196019{margin-top: 10px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/3″][vc_raw_html css=\u00a0\u00bb.vc_custom_1786396549270{margin-bottom: 0px !important;}\u00a0\u00bb]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[\/vc_raw_html][\/vc_column][vc_column width=\u00a0\u00bb1\/3″ css=\u00a0\u00bb.vc_custom_1784910392329{padding-left: 20px !important;}\u00a0\u00bb][vc_single_image image=\u00a0\u00bb7422″ img_size=\u00a0\u00bbmedium\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1785530304316{margin-top: 5px !important;margin-bottom: 5px !important;}\u00a0\u00bb][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785873212271{margin-top: 0px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″][vc_column_text css=\u00a0\u00bb.vc_custom_1785873221488{margin-top: 0px !important;}\u00a0\u00bb]Il est important de prendre en compte le remplissage ou l’occupation de la gorge du joint torique install\u00e9 afin d’\u00e9viter des effets n\u00e9fastes sur la performance d’\u00e9tanch\u00e9it\u00e9 radiale. Le remplissage de la gorge du joint torique install\u00e9 ne doit pas d\u00e9passer 85 % pour tenir compte d’une \u00e9ventuelle dilatation thermique du joint torique, du gonflement volumique d\u00fb \u00e0 l’exposition au fluide et des effets des tol\u00e9rances.\r\n\r\nLe changement de volume est l’augmentation ou la diminution du volume d’un \u00e9lastom\u00e8re apr\u00e8s avoir \u00e9t\u00e9 en contact avec un fluide, mesur\u00e9 en pourcentage (%). Pour les applications de joints toriques statiques, un gonflement volumique allant jusqu’\u00e0 30 % peut g\u00e9n\u00e9ralement \u00eatre tol\u00e9r\u00e9. Pour les applications dynamiques, un gonflement de 10 ou 15 % est un maximum raisonnable, \u00e0 moins que des dispositions sp\u00e9ciales ne soient prises dans la conception de la gorge elle-m\u00eame. Il s’agit d’une r\u00e8gle g\u00e9n\u00e9rale et il peut y avoir occasionnellement des exceptions.\r\n\r\nIl est \u00e9galement important de noter qu’il existe des diff\u00e9rences significatives dans les coefficients de dilatation thermique entre le mat\u00e9riau du joint torique et les mat\u00e9riaux de la gorge. Les \u00e9lastom\u00e8res peuvent avoir des coefficients de dilatation thermique 7 \u00e0 20 fois plus \u00e9lev\u00e9s que ceux du m\u00e9tal, tel que l’acier.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784910435551{margin-top: 40px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bbextrusion-gap\u00a0\u00bb]\r\n

      Jeu d’extrusion<\/span><\/h3>\r\nL’extrusion est une pr\u00e9occupation pour les joints radiaux o\u00f9 il y a un espace entre le piston et l’al\u00e9sage pour un joint de type piston ou entre la tige et le diam\u00e8tre de la gorge pour un joint de type tige. Ce n’est g\u00e9n\u00e9ralement pas une pr\u00e9occupation pour les joints de type face o\u00f9 les pi\u00e8ces m\u00e9talliques \u00e0 \u00e9tancher sont en contact ligne \u00e0 ligne. Le probl\u00e8me est qu’\u00e0 des pressions plus \u00e9lev\u00e9es et surtout pour les \u00e9lastom\u00e8res de joint torique plus souples, le joint torique peut \u00eatre forc\u00e9 par la pression dans le petit espace entre le piston (ou la tige) et l’al\u00e9sage (diam\u00e8tre de la gorge). \u00c0 moins que l’al\u00e9sage (diam\u00e8tre de la gorge) et le piston (ou la tige) ne soient assur\u00e9s de rester concentriques par le mat\u00e9riel, nous devons supposer que l’espace possible entier peut se d\u00e9placer d’un c\u00f4t\u00e9 (voir le diagramme ci-dessous).\r\n\r\n\r\n\r\n
      Joint de type piston<\/strong>\r\n\r\nJeu d’extrusion radiale = (\u00d8 al\u00e9sage – \u00d8 piston)\/2<\/strong><\/span><\/td>\r\nJoint de type tige<\/strong>\r\n\r\nJeu d’extrusion radiale = (\u00d8 al\u00e9sage – \u00d8 tige)\/2<\/strong><\/span><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\u00d8 = Diam\u00e8tre<\/em>\r\n\r\n\"\"[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1784910449273{margin-top: 40px !important;margin-bottom: 35px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/3″][vc_column_text css=\u00a0\u00bb\u00a0\u00bb el_id=\u00a0\u00bblimits-for-extrusion\u00a0\u00bb]\r\n

      Limites d’extrusion<\/span><\/h2>\r\nIl existe diff\u00e9rentes m\u00e9thodes pour contrer l’extrusion des joints toriques. L’une de ces m\u00e9thodes consiste simplement \u00e0 augmenter la duret\u00e9 du joint torique. Cependant, \u00e0 mesure que la duret\u00e9 augmente, le joint torique peut devenir moins mall\u00e9able. Une autre option serait d’utiliser des dispositifs anti-extrusion. Ce sont de minces anneaux fabriqu\u00e9s \u00e0 partir de mat\u00e9riaux plastiques durs tels que le KasPex\u2122 PEEK, le PTFE et le nylon. Une fois en place, ces anneaux offriront un jeu pratiquement nul.\r\n\r\n \r\n\r\nR\u00e9duire le jeu indiqu\u00e9 de 60 % lors de l’utilisation d’\u00e9lastom\u00e8res en silicone (VMQ) ou en fluorosilicone (FVMQ).<\/em>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/3″][vc_single_image image=\u00a0\u00bb7423″ img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row]<\/div>","protected":false},"excerpt":{"rendered":"

      [vc_row css=\u00a0\u00bb.vc_custom_1785424942816{margin-top: 25px !important;margin-bottom: 25px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1785424700204{margin-top: 5px !important;margin-bottom: 0px !important;}\u00a0\u00bb][web3_vc_content sm=\u00a0\u00bb\u00a0\u00bb md=\u00a0\u00bb\u00a0\u00bb lg=\u00a0\u00bb\u00a0\u00bb] Sommaire Section transversale du joint torique Types\u2026<\/p>\n","protected":false},"author":2,"featured_media":7424,"parent":7023,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-7425","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nConsid\u00e9rations de conception des joints toriques - Hi-Tech Seals<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hitechseals.com\/fr\/ressources\/guide-de-conception-des-joints-toriques\/o-ring-design-considerations\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Consid\u00e9rations de conception des joints toriques - Hi-Tech Seals\" \/>\n<meta property=\"og:description\" content=\"[vc_row css=\u00a0\u00bb.vc_custom_1785424942816{margin-top: 25px !important;margin-bottom: 25px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3″ css=\u00a0\u00bb.vc_custom_1785424700204{margin-top: 5px !important;margin-bottom: 0px !important;}\u00a0\u00bb][web3_vc_content sm=\u00a0\u00bb\u00a0\u00bb md=\u00a0\u00bb\u00a0\u00bb lg=\u00a0\u00bb\u00a0\u00bb] Sommaire Section transversale du joint torique Types\u2026\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hitechseals.com\/fr\/ressources\/guide-de-conception-des-joints-toriques\/o-ring-design-considerations\/\" \/>\n<meta property=\"og:site_name\" content=\"Hi-Tech Seals\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-11T14:05:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hitechseals.com\/wp-content\/uploads\/2026\/07\/O-Ring-Design-Considerations-thumbnail.png\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"270\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimation du temps de lecture\" \/>\n\t<meta name=\"twitter:data1\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/fr\\\/ressources\\\/guide-de-conception-des-joints-toriques\\\/o-ring-design-considerations\\\/\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/fr\\\/ressources\\\/guide-de-conception-des-joints-toriques\\\/o-ring-design-considerations\\\/\",\"name\":\"Consid\u00e9rations de conception des joints toriques - 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