Need advice fixing leak + where to buy large washer

[OM2]

I took apart pipes under the kitchen sink.
The washing machine was still smelling after having cleaned thoroughly.

I put all pipes together and now get dripping water.
I took everything apart, can't see where the leak is coming from.
There is a large yellow washer that is broken.

I went to the local plumbing shop and the guy rummaged through his parts and said he couldn't find.

I was hoping someone can tell me where I can get?

See pic:

Aside: is there a general way of best identifying the source of the leak?
I've had leaking problems in the past at the same location... so am guessing this is definitely the cause.

ALSO: if there is gunge in the washing machine pipe... how best do I clean?
Taking out the washing machine is a mission. It'll take me a few hours start to finish!

Thanks.

 

[oldbuffer]

1. If that is your washing machine waste going into the left hand spigot on the trap (follow silver bit down, jus below first white nut, spigot for appliance waste attachment) it should come up to the level of the underside of the work top, then fall into the waste.
2. If removing the machine to clean the hose is a nuisance, you could try running the machine very hot with a washing machine cleaner added, and no clothes.
3. For spare washers, have a look at https://www.plumbers-mate-sales.co.uk/washers-for-plugs--wastes--fittings--traps-172-c.asp . That joint should have (top to bottom) - the white plastic nut, a washer made of hard plastic, a rubber washer with a cone profile. The narrow end of the cone goes into the lower pipe.

 

[tincup]

Maybe something like this

BES.co.uk | Next Day Delivery On 15,000 + Plumbing Supplies

Order Trap Washers and other water waste accessories online at BES. Low prices. Free next day delivery available. 15k+ Products in stock. P/N: 16858

www.bes.co.uk

BES.co.uk | Next Day Delivery On 15,000 + Plumbing Supplies

Order Trap Washers and other water waste accessories online at BES. Low prices. Free next day delivery available. 15k+ Products in stock. P/N: 16857

www.bes.co.uk

 

[OM2]

Thanks for the replies guys.

The part isn't on those links you gave.
I'll take apart and send a pic later.
It's about 1cm thick and normally hidden - I purposely left a bit showing to ask my question.

>> 1. If that is your washing machine waste going into the left hand spigot on the trap (follow silver bit down, jus
>> below first white nut, spigot for appliance waste attachment) it should come up to the level of the underside of
>> the work top, then fall into the waste.
Hmmm... the washing machine waste pipe is the dark silver/grey pipe at the back.
It definitely doesn't rise and then fall - it just goes downward from the washing machine.
I can definitely fix it so that we have the rising you mention.
I looked up loads on youtube and couldn't find this clearly mentioned (I was speed watching and skipping bits though).

 

[mattylad]

Just buy new fittings.