Sealing threads

[OZAWOZA]

Those of you who are more experienced than I in all things automotive....Please don't laugh at what I am about to ask....

I am replacing a few bits and pieces on the engine (only simple things like water temp sender, adaptor, etc - my question is when I screw the new bits in, do I need to seal the threads with anything to get a good seal, and if so what would you recommend?

I come from a construction background and when we join metal to metal threads we use things like PTFE tape or pipe jointing compound, so I am assuming that I need to do similar on my engine.... am I looking for something like Hylomar Universal Blue (which I have seen advertised)? I don't think I really want a thread locking compound....or do I???

Thanks, and please go easy on me

 

[jamesmartin]

hylomar is good as is rtv silicone sealant

 

[OZAWOZA]

Thanks Jamesmartin... I have RTV sealant anyway, so just a smear on the threads I guess (is it ok with hot engine temperature?)

 

[jamesmartin]

should be as long as its rated 100c

 

[OZAWOZA]

Thanks Again

 

[doughnut]

Hi Ozawoza, you don't need to put anything on the threads, except a smear of grease/copperslip if you want to. A smear of blue hylomar on the mating surfaces would be ok but don't overdo it.

 

[OZAWOZA]

Sounds like as little as poss, if any at all then.... Thanks

 

[fanatic]

As james says won't hurt