
Made in the USA:
Every tube is manufactured in our factory in Oxnard, California.


Behind every Tamper Seal mark is a commitment to protecting the integrity of your work.
The Detective Seal mascot was inspired by 1940s-style investigators like Hercule Poirot.
He's a serious dude who cares about the integrity of your work and your stuff.


Every tube is manufactured in our factory in Oxnard, California.

We've been protecting the integrity of your work since 1979.

Built for professionals, trusted by DIY users, and backed by a team that takes your work seriously.