Under sink plumbing

Question

Replaced u bend under double sink in kitchen, some leaking around joints.

All seals are brand new, all connections are threaded correctly but there’s still slight leakage around the connections, not sure why

Jerome · Answer

Try change the u bend for another in the problem persists I recommend u change the sink plug hole

Sean · Answer

Good morning.
You may need to apply a small amount of ptfe tape on top of the rubber seals to thicken them up abit.
Make sure all your joints are threaded correctly which you have already stated.
Hand tighten all the joints and pinch them up slightly with a pair of grips afterwards.
Hope this helps.

Jan · Answer

I guess rubber_rings might be wrongly monted. Check out.

Robert · Answer

Hello
Probably just needs the o ring seals checking and that they are in the right place and have not slipped out.
Thanks
Rob Hall
Hall's Plumbing & Heating

Callum · Answer

Make sure the rubber washers are all sitting correctly inside the seals. There’s no way any tape or other compound should be needed on brand new fittings

Kai · Answer

You may need to add some ptfe tape around the new seals as sometimes they can come slightly smaller than the original. They should be hand tight and only a little tighten with grips if necessary. Hope this helps

Martin · Answer

Sometimes a bit of plumbers mate or PTF will see you through

Shero · Answer

Try to open it all and clean them and use pdf tape around each connection and tight them all.……..see what will gaping then……….if still leaking some where, then use silicone around the connection.

Chris · Answer

There will either be a slight scratch or dirt in one of the washers, or it’s not sitting correctly. They only rely on the rubber washers to seal the joint because they are made of plastic, you shouldn’t be needed ptfe on a u bed trap. 
Try cleaning the joints and retighten.

Ian · Answer

If its a u bend that's arrived with the sink bin it and buy a mcalpine one

Under sink plumbing

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