06/24/2026
In this case study, Promess and a longtime customer used the Promess EMAP and Lee Company Betaplug expansion plug to successfully seal a cross drilled hole.
The manufacturer was having a problem with cracked housing and production yield issues while using a ball pressing application. This led the manufacturer to replace the ball with The Lee Company Betaplug expansion plug.
The problem of cracked housing and production yield issues was solved but there were now the issues of unacceptable scrap rate, yield issues and damages in the fixturing. This was due to the manufacturer carrying over the improper installation specification. In the end, a plug and program change solved the problem and led to the successful installation and use of over 35 million plugs, without any leaks.
Read more on our website to learn in-depth about the challenges this customer faced when trying to seal these cross drilled holes and how they overcame them:
https://www.promessinc.com/mitigate-manufacturers-installation-yield-issues-reduced-scrap/?utm_source=Advertisement&utm_medium=Social&utm_campaign=Case+study+sealing+a+cross+drilled+hole