Vortech question

[ReefRondo]

I have 12 vortech pumps (10’s,40’s and 60’s) and as much as I love how they work I have had to replace most of the wet sides in roughly a year which for the money whether you love them or not…got to admit thats not great is it? I strip them down fully, soak in citric acid, scrub and apply Molykote 111 when dried to lubricate and still things seem to get either mega noisy or the metal shaft begins to rust. He is a question for you vortech users. The white ceramic tube over the metal rod…is the ceramic tube meant to spin around the metal rod or is the propeller section meant to spin around the ceramic tube? To word more clearly is the ceramic tube meant to spin or remain static when the pump in in operation? I have a few that the white tube comes off when cleaning and some that don’t.

 

[WVNed]

I have one that the ceramic moves but I think it is supposed to be a bearing between the metal and plastic.
I am not sure what people do to these.
I have 7. My MP10 is going on 9 years and has had it's wet side replaced once. 2 MP40s at 2 years and are fine. 4 MP60s
I have replaced one wet side. It kept sliding down the inside of the tank.
Mostly I clean mine with warm water and a toothbrush. Sometimes I use muriatic acid but only for 10 minutes or so.
I don't have problems with them being noisy and have seen no rust.

 

[ReefRondo]

So can I just glue the ceramic tube to the metal shaft to make sure it stops spinning?