New locking end caps with Original Cast Acrylic Tube

Is there any reason why the new locking ends cant be used with the OG cast acrylic tubes.

Yes the locking functionality wont work but will they still create a watertight seal?

Hi @Yeti591, welcome to the forum :slight_smile:

From the technical details sections on our product pages:

Accordingly, a locking flange is too large to fit inside a non-locking tube.