Plastic sink waste seals

25 Jun 2020
Reaction score
United Kingdom
The 40mm waste pipe trap fitting under my son’s sink has sliding joints and these seal with a plastic 40mm ring. This appears to be tapered like the rubber joint seal but a rubber one won’t fit (too bulky). I have been unable to find any plastic ring seals can anyone suggest where they might be available?
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Is a joint leaking ,or seal missing ? If leaking ,wrap PTFE tape around the seal and reassemble.
Two of the sliding joints are vertical and over time they work loose and the joints fall apart. Have used tape and put a block of wood under it but wanted to try and find new seals.

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