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O Ring for Franke Housings

£5.99
This round profile o-ring fits the Franke plastic water filter housing.

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The most commonly found round profile o-ring has a 70mm internal diameter and is suitable for the Franke plastic filter housings.

Suitable for the FilterFlow white plastic water filter housing, FilterFlow Zurich, Mini, Minerva & Omni Boiling water tap products. 

We recommend you take extra care when ordering o-rings for your housing - ideally, remove the old one and measure it carefully.

There are other sizes that have been used by Franke over the years:

  • 65mm (int diam)
  • 50.5mm (int diam) for some stainless steel housings
  • 52mm (int diam) square profile

Please contact us through our help desk if you're not sure about what o-ring you need.  

Alternatively you can call us on 01352838281.

Free UK delivery.

What is an o-ring?

An o-ring is a circular ring made of rubber. They're available in a range of sizes which are specified by the inside diameter and cross-section diameter. The o-rings we source tend to be made of nitrile rubber. It's a common material for o-rings because of it's good mechanical properties and it's resistance to lubricants and greases. 

What does an o-ring do?

In our case they prevent water leaking from the filter housing bowl. The o-ring is placed into the groove at the top of the water filter housing. It helps secure the bowl to the cap as the o-ring is compressed between two surfaces. 

Why do I need to change the o-ring?

You can tell if the seals start leaking, which is obvious, I know.

Even if there are no leaks you may find that the profile of the O ring becomes flattened because of prolonged time under compression. The cross section should be round and if it's not it may not seal easily.

However, we recommend that you replace the O rings every two or three years as a precautionary measure.

One of the main reasons for changing O rings periodically is that as they age and compress, the housing bowl needs to be tightened excessively. That leads to difficulty loosening the bowl from the cap next time the cartridge needs to be replaced.

 
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