On 29 Oct 2020 at 17:20:27 GMT, "The Natural Philosopher"
wrote:

On 29/10/2020 16:12, Roger Hayter wrote:
On 29 Oct 2020 at 14:55:34 GMT, ""Dave Plowman" News)"

wrote:

In article ,
Roger Hayter wrote:
I have a brass temperature sensor about 14mm in diameter, no 'O' ring or
shoulder, just seals on the threads into an aluminium cylinder head.
What should I use to seal it? Nothing, ptfe tape, ordinary blue loctite,
plumbing thread sealing compound (a bit too permanent I would think) or
something else? Glad of any advice.

No taper at the end? PTFE tape won't do any harm.

I use ScotchClad thread sealer for everything that screws into my ally
engine. It seals, prevents corrosion, and locks.

Thanks. The ScotchClad seems a bit elusive, though.

If Loctite don't make something exactly designed for this, I'll eat my hat.

Ooh. I don't own a hat. Hmm...


https://www.loctiteproducts.com/en/p...erblue242.html

I'd leave 24 hours to 'cure' on a non steel surface


https://www.amazon.co.uk/Henkel-2097.../dp/B000I1RSNS

That's what I tend to use on cars. Not sure how well it is rated as a
sealant, but I suppose it is bound to works at least to some extent if it
locks the threads.


--
Roger Hayter