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How to identify which toilet seating washer to buy?

1) Flush Valve2) Back of the Flush buttons3) Seating Washer

Good afternoon, friends from Bunnings Warehouse!

My toilet has a leak from the cistern to the toilet, which I believe can be solved by replacing the seating washer.

However, I do not know exactly what brand and model to buy. The brand of my flush valve seems to be WDI, however, I could not find any seating washer of this brand on the Bunnings website.

Picture #1 shows my flush valve.
Picture #2 shows the back of the discharge buttons, where it is written "WDI K4020".
Picture #3 shows, in close, the seating washer where it shows a code: "R07".

An important piece of information, which I find important to register, is the measures of seating washer:
- External diameter: ≈6.5mm
- Internal diameter: ≈3.5mm
- Thickness: ≈0.3mm

As I mentioned earlier, I found several brands/models on the Bunnings website, but I'm not sure which one(s) could replace the one I have.

Perhaps, some of you could tell me which seating washer could properly fit my flush valve model (even if it's a generic brand).

Thank you all,
Mateus.

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EricL

Hello @Mateus

Welcome to the Bunnings Workshop community. Thank you for joining us and sharing your question about your seating washer.

The closest equivalent washer that the store has is the Kinetic 65mm Geberit Washer. It is a specially sized washer and only fits the Geberit and European-styled flushing systems. You can also special order the Fix-A-Loo version which is compatible with the Geberit brand. Please speak to your local store's special orders desk if you wish to order this product. I've placed a photo below for your reference.

If you need further assistance, please let us know.

Eric

Mateus

Hello @EricL!

Thank you very much for your kindness in answering my message!

Following your answer, I have just ordered the Kinetic 65mm Geberit Washer. I hope it will fit and fix the problem. : )

If you allow me, I am curious to know if my flush valve brand really is WDI and, if so, it is possible to find parts for this brand in Australia.

Warm regards,

Mateus.

EricL

Hello @Mateus

Your flushing unit is a WDIK4020 FULU single box flush. I'm currently not aware of any provider that carries spare parts for this kind of flushing system. Can you please tell me what is the make and model of your toilet suite? Perhaps with more information, we can track down a provider that has spare parts or perhaps a compatible system.

However, if it proves to be too difficult you will have to consider changing your toilet suite to something more modern or perhaps upgrade your cistern to something that has modern flushing systems in them.

If you need more advice or information, please let us know.

Eric

Mateus

Hi @EricL

I am sorry for the delay in answering you... busy week!

Thank you very much for your attention, you have helped me a lot!

Have a great week!

Mateus.

Dan2222

I had to look for a replacement of this exact inlet and outlet system and found it online.

It's described as: Parisi Inlet Valve for Concealed Cisterns PA120, PA121, PA110 and PA111 for $62,50 and Parisi Replacement Mechanical Outlet Valve for Concealed Cistern for $75. It's from www.sydneybathroomware.com.au but there may be other places (I am sure there would be).

I read this post a couple of weeks ago and thought there wouldn't be a replacement available, but I found them, so here they are in case anyone else looks for them.

MitchellMc

Welcome to the Bunnings Workshop community @Dan2222. It's sensational to have you join us, and many thanks for contributing to the discussion.

I trust any members coming across this discussion will appreciate your input. Did you need to buy the entire flush mechanism, or was there an inexpensive replacement washer available? It seems a shame to buy a whole new outlet when @Mateus only needed to source a washer. It's always best to select an outlet valve you can readily source and replace the disposable parts on.

I'll be looking forward to hearing all about your other projects going on around the house and garden. Please reach out anytime you need assistance or have something to share.

Mitchell

andrewt148

Thought I'd jump into this conversation thread rather than making a new one, I'm also struggling to find a replacement seating washer for my seemingly no-brand en-suite toilet.

The washer looks like this:

The valve, which has no distinguishing features or branding except for a Watermark code (WMK00327 in case that's relevant, though I've read it isn't likely to be):

No distinguishing features except for a Watermark code.

Sticker found on the side of the cistern in case that helps to identify:

It's a fairly old system so if we can't find a replacement washer we may just consider installing a whole new unit.

Thanks in advance.

JacobZ

Hi @andrewt148,

Thank you for your question and welcome to the Bunnings Workshop community, it is fantastic to have you with us.

Unfortunately, I'm not 100% certain of a suitable replacement for your toilet seating washer as it appears to be an imported toilet that I can't track down any information on.

My suggestion would be to take your old seating washer and compare them with the options in store and choose the one that is closest to your old one taking note of the outer diameter and the diameter of the central hole.

If you can't find a suitable replacement, you may need to replace the inlet valve with a new one.

This handy guide from Fix-A-Tap might also be useful for you - How To Service a Valve

Let me know if you have any further questions.

Jacob

andrewt148

Hi Jacob,

Thanks for the response. I had a feeling it was a random model, and I did have a look through the options at the local Bunnings.

TBH it's not a very efficient toilet system, so we might just replacement with a new one.

Thanks again for your help.

Andrew

Jason

You might like to take advantage of the Bunnings toilet installation service @andrewt148.

Jason

andrewt148

I was definitely thinking this too. Cheers!

hjhch1234

I managed to fix my leaking toilet cistern issue after multiple attempts. I had the exact same toilet flush valve as described above.

1. The name of the model is Parisi WDI K4020. I tried to replace the rubber plug of my existing toilet flush Parisi WDI K4020 with the Kinetic 65mm Geberit Washer from Bunnings as recommended above.

https://www.bunnings.com.au/kinetic-65mm-geberit-washer_p4920267

However, the water leak continued despite replacing the rubber part. Actually water leak was worse after the replacement.

2. I decided to replace the toilet flush valve completely. I managed to find the exact same toilet flush valve as my existing one. There is only 1 shop in Australia which sells this part. I drove to their shop in Mascot to grab this product.

https://www.sydneybathroomware.com.au/replacement-cistern-spares/parisi-replacement-mechanical-outlet-valve-for-concealed-cistern/

I changed the toilet flush valve but micro water leak continued despite of the replacement.

3. I applied some silicon gel around the rubber part of the toilet flush valve. Only smear. Then water leak stopped completely.

Hope you find my advice helpful.

JacobZ

Hi @hjhch1234,

Welcome to the Bunnings Workshop community, it is wonderful to have you with us.

Thank you for taking the time to jump on and document your experience for others to follow along. It is people like you who make this community a fantastic resource for others, and we greatly appreciate it.

Jacob

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