roll top bath installation 40mm waste fitting

[roger44]

I am installing a roll top bath in a upstairs bathroom, using 40mm chromed pipe.
The waste fitting is in several parts each with a olive comperession ring. Any ideas how I can tighten these glands without damaging the crome finish?

altenatively are there any plastic or rubber seals that can be used instead of the olive ring?

[chris_on_tour2002]

don't overtighten the olive. copper push-fittings are available, at a price, not sure about chrome, never seen them personally. certainly not aware of any plastic or rubber olives suited to copper compression fittings.