##  [Pinhole Leak](/pinhole-leak) 

  ##  [Pinhole Leak](https://engineering.quantumdictionary.io/pinhole-leak-0) 

  

 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)



**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A very small, localized through‑wall breach in a pipe, vessel, coating, or joint that permits measurable escape of liquid or gas while producing little or no obvious external damage.