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Thanks guys Been to merchants but they couldn't help. One tried to give me some from a new pump then try to ring Grundfos to say they were missing but his manager wouldn't allow. Just found a post on here where a guy has cleaned his pump and replaced with graphite washers and flange sealant...

Hi All Please can you help. I have a Grundfos pump in my heating system and it appears to be leaking from the bottom connection port. This happend before a few years ago and appeared that washer had deteriated, so im presuming this one is to. In the last case even though pump working fine I had...