On my 17 year old Indesit washing machine, attached to the inside of the
drum are three plastic 'paddles' and each paddle has 6 thin grooved lugs
on the base to slot in to the 24swg stainless drum. Over the years these
items have been replaced many times, but now spares are becoming scarce.

The ideal fitting procedure is with the drum off, so the locking tab can
be wedged into place, but the locking tab is not visible from inside the
drum.

The main cause of failure seems to be when these paddles become very
slightly loose and the sharp edges of the drum cut the lugs off the
paddles. My proposal would now be to run some 'glue' under the edges of
these paddles to keep them fixed to the drum.

I would need something strong enough to retain the paddles for a wash and
spin cycle, even if 4 lugs were missing on each paddle, but the prime
action is to prevent the paddles from moving at all.

As far as I know, all the lugs are still in place at the moment, but I can
feel slight movement on 2 of the paddles.

What do you think would be a suitable product to secure these paddles as
this will be the final repair ?

PS: I don't think balance will be a problem.