wrote in message
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Is there a better alternative for these plastic covers that you put
over radiator tails to cover up the copper .Last time I used them they
discoloured quite quickly . Maybe they are better now or is there
another way of doing it .What do you use or do you just leave the
copper as it is ?

Conduit. Egatube, to be exact. It stays white for years, unless you burn
it. Then it goes a horrible brown/black sort of colour. :-)