{"id":4512,"date":"2025-08-06T12:39:37","date_gmt":"2025-08-06T10:39:37","guid":{"rendered":"https:\/\/www.drwiesner.de\/glossary\/oil-tightness\/"},"modified":"2026-03-13T08:07:47","modified_gmt":"2026-03-13T07:07:47","slug":"oil-tightness","status":"publish","type":"glossary","link":"https:\/\/www.drwiesner.de\/en\/glossary\/oil-tightness\/","title":{"rendered":"Oil tightness"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4512\" class=\"elementor elementor-4512 elementor-2076\" data-elementor-post-type=\"glossary\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bf70d7d e-flex e-con-boxed e-con e-parent\" data-id=\"bf70d7d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bc1a3c6 elementor-widget elementor-widget-text-editor\" data-id=\"bc1a3c6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Components are considered oil-tight if, depending on the application, no oil ingress or egress can be detected within a defined period.<\/p><p>In industrial leak testing, the tightness against various media is tested with air or other gases for practical reasons. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de9e8b3 elementor-widget elementor-widget-text-editor\" data-id=\"de9e8b3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The following guideline values apply:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b5b832c e-flex e-con-boxed e-con e-parent\" data-id=\"b5b832c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-41ee670 elementor-widget elementor-widget-text-editor\" data-id=\"41ee670\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<table><tbody><tr><td><p><em><strong>Characteristic<\/strong><\/em><\/p><\/td><td><p><em><strong>Air leakage<\/strong><\/em><\/p><\/td><td> <\/td><td><p><em><strong>Note<\/strong><\/em><\/p><\/td><\/tr><tr><td> <\/td><td><p><em>from<\/em><\/p><\/td><td><p><em>to<\/em><\/p><\/td><td> <\/td><\/tr><tr><td><p><a class=\"glossaryLink\" href=\"https:\/\/www.drwiesner.de\/en\/glossary\/water-tightness\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Water Tightness<\/a><\/p><\/td><td><p>0.5 cm&sup3;\/min<\/p><\/td><td><p>12 cm&sup3;\/min<\/p><\/td><td> <\/td><\/tr><tr><td><p>Oil tightness<\/p><\/td><td><p>0.6 cm&sup3;\/min<\/p><\/td><td><p>4.5 cm&sup3;\/min<\/p><\/td><td> <\/td><\/tr><tr><td><p><a class=\"glossaryLink\" href=\"https:\/\/www.drwiesner.de\/en\/glossary\/fuel-tightness\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Fuel tightness<\/a><\/p><\/td><td><p>0.1 cm&sup3;\/min<\/p><\/td><td><p>3 cm&sup3;\/min<\/p><\/td><td><p>Values for liquid fuel<\/p><\/td><\/tr><tr><td> <\/td><td><p>0.0006 cm&sup3;\/min<\/p><\/td><td> <\/td><td><p>Current value for USA export<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7aedb6c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"7aedb6c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Note:<br>The extremely low value for petrol tightness results from the requirement for fuel systems to be tight against vapours. The higher value represents the liquid tightness against petrol. <\/p>\t\t\t\t\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<div class=\"pdfprnt-buttons pdfprnt-buttons-glossary pdfprnt-bottom-right\"><a href=\"https:\/\/www.drwiesner.de\/en\/wp-json\/wp\/v2\/glossary\/4512?print=pdf\" class=\"pdfprnt-button pdfprnt-button-pdf\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.drwiesner.de\/wp-content\/plugins\/pdf-print\/images\/pdf.png\" alt=\"image_pdf\" title=\"View PDF\"\/><span class=\"pdfprnt-button-title pdfprnt-button-pdf-title\">Download<\/span><\/a><a href=\"https:\/\/www.drwiesner.de\/en\/wp-json\/wp\/v2\/glossary\/4512?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.drwiesner.de\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\"\/><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Drucken<\/span><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Components are considered oil-tight if, depending on the application, no oil ingress or egress can be detected within a defined period. In industrial leak testing, the tightness against various media is tested with air or other gases for practical reasons. The following guideline values apply: Characteristic Air leakage Note from to Water Tightness 0.5 cm&sup3;\/min [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-4512","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oil tightness - Wiesner Pr\u00fcftechnik GmbH<\/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.drwiesner.de\/en\/glossary\/oil-tightness\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oil tightness - Wiesner Pr\u00fcftechnik GmbH\" \/>\n<meta property=\"og:description\" content=\"Components are considered oil-tight if, depending on the application, no oil ingress or egress can be detected within a defined period. 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