[Shop-talk] Dum-Dum

[David Scheidt]

3m strip caulk part number 051135-08578. At least that is the number on the 25 year old box I have. Still good. 

> On Apr 5, 2026, at 17:57, Jeff Scarbrough <fishplate at gmail.com> wrote:
> 
> 
> Working on my 50 year old Triumph Spitfire, and I'm looking for the sealer that is used between the master cylinder bracket and the firewall.  We always called it dum-dum.  It came in pencil-sized strips liked up on heavy waxed paper.  
> 
> But when I go to the FLAPS and ask for dum-dum, they look at me like I'm doomed sort of dum-dum.
> 
> Is there another name for this stuff?  
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