Below you'll find replacement water filter cartridges for our Moby and Doby mains water filters.
If you can't find the water filter cartridge you're looking for then either call us on 01352 838 281 or send us a message through our help desk.
We recommend you change the o-ring every couple of years, so if you haven't changed it recently just select o-rings from the drop down menu on each product below. See below for 'Why do I need to change the o-ring?'
Free standard postage for all deliveries within the UK.
You can put used cartridges in your household recycling bin.
Replacement water filter cartridges for our Moby TF.
Water filter replacement cartridges for our Moby TBC which removes bacteria and chemicals from your water.
Improve taste and odour and remove chlorine, sediment and heavy metals from your mains water.
Water filter replacement cartridges for our Moby TMF. A taste, metals and fluoride mains water filter.
Water filter replacement cartridge for the Moby H.
Replacement Watts water filter cartridge for our Moby F.
5 micron carbon block water filter cartridge for a 20 inch housing.
5 Micron Carbon Block cartridge for our Moby mains water filter.
Green top Full Flow Chlorine Guzzler 4.5 x 10 inch cartridge for Big Blue housings
Replacement water filter cartridge for our Moby M taste and metals mains water filter.
Water filter replacement cartridge for iron reduction. Free UK delivery.
Set of 6 Doulton Sterasyl candles for the Moby Rio - without carousel (plenum).
Replacement Carousel with 6 candles for the Moby Rio
10 micron carbon block water filter cartridge for a 20 inch housing.
Replacement water filter cartridge for our Doby M taste and metals mains water filter.
Replacement water filter cartridges for our Doby Taste and Fluoride Filter
Replacement water filter cartridges for our Doby TMF Filter
Replacement water filter cartridge for our Doby Fluoride Filter
You can tell if the seals start leaking, which is obvious, we 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.
