{"id":4910,"date":"2025-07-28T08:34:04","date_gmt":"2025-07-28T06:34:04","guid":{"rendered":"https:\/\/www.drwiesner.de\/glossary\/fuel-tightness\/"},"modified":"2026-03-13T08:03:22","modified_gmt":"2026-03-13T07:03:22","slug":"fuel-tightness","status":"publish","type":"glossary","link":"https:\/\/www.drwiesner.de\/en\/glossary\/fuel-tightness\/","title":{"rendered":"Fuel tightness"},"content":{"rendered":"
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Components are referred to as being gasoline-tight if, depending on the application, no gasoline ingress or egress is detectable within a defined period.<\/p>

In industrial leak testing, the tightness against various media is tested with air or other gases for practical reasons. 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

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Characteristic<\/strong><\/em><\/p><\/td>

Air leakage<\/strong><\/em><\/p><\/td>

 <\/td>

Note<\/strong><\/em><\/p><\/td><\/tr>

<\/td>

from<\/em><\/p><\/td>

to<\/em><\/p><\/td>

 <\/td><\/tr>

Water Tightness<\/a><\/p><\/td>

0.5 cm³\/min<\/p><\/td>

12 cm³\/min<\/p><\/td>

 <\/td><\/tr>

Oil tightness<\/a><\/p><\/td>

0.6 cm³\/min<\/p><\/td>

4.5 cm³\/min<\/p><\/td>

 <\/td><\/tr>

Fuel tightness<\/p><\/td>

0.1 cm³\/min<\/p><\/td>

3 cm³\/min<\/p><\/td>

Values for liquid fuel<\/p><\/td><\/tr>

<\/td>

0.0006 cm³\/min<\/p><\/td>

 <\/td>

Current value for USA export<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Note:<\/strong>
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

\"image_pdf\"Download<\/span><\/a>\"image_print\"Drucken<\/span><\/a><\/div>","protected":false},"excerpt":{"rendered":"

Components are referred to as being gasoline-tight if, depending on the application, no gasoline ingress or egress is detectable 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 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-4910","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"\nFuel 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\/fuel-tightness\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fuel tightness - Wiesner Pr\u00fcftechnik GmbH\" \/>\n<meta property=\"og:description\" content=\"Components are referred to as being gasoline-tight if, depending on the application, no gasoline ingress or egress is detectable within a defined period. 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