Quote:
Originally Posted by maitiustandun
hello, ive used fernox ls-x , on an old mullard valve in my philips 525a , also the top connection which was also loose , seems to have done the job no sign of melting , this compound is really for sealing plastic water pipes , best regards maitiu.
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Fernox LS-X is a silicone sealant with quite a strong vinegar (acetic acid) smell. It's designed as a plumbing leak sealant and jointing compound though I would have doubts about using it on plastic pipes. A light smear on a compression joint or fibre washer can work wonders. I don't know if the acetic acid could be harmful to a valve.