Ring cleaner? (6)

I believe the answer is:

washer

This clue is a double definition.

'ring' is the first definition.
(I've seen this before)

'cleaner?' is the second definition.
(I've seen this before)

(Other definitions for washer that I've seen before include "Baptist" , "Seal preventing leakage" , "Leak-stopping ring" , "Metal ring - cleans clothes" , "Plumbing seal" .)

I've seen this clue in The Irish Times.

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