Yes it did make the noise before I changed the seal that is why I changed the seal. It is a genuine spare part. full model no. Bocsh classic XX 1200.
If I put my hand in the machine between the seal and cylinder I can feel tiny specks of rubber coming of the seal. And turning the drum by hand it makes a terrible noise. I have taken the top of and if I push the whole unit, that is the concrete encased outer case, if I push it to the back of the machine and then turn the cylinder it runs freely, no noise, the moment I release the outer casing with the concrete on it, it starts to make the noise again. The four springs look ok, and it does not look as if it is out of alignment.