i have a servowarm supreme which is about twenty years old and is working okay,but the front gasket is leaking and needs replacing.this would stop me having to top up the water so often.can anyone tell me where i can obtain a replacement .
thanking you
Probably standard fibre washer, get anywhere, B+Q even, Or get a kit of several in a pack, Screwfix toolstation etc etc. work on pipe size etc to get new before you take apart.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.