Thread sealant - what to use?

[Caterham7RandT]

I'm in the process of replacing a damaged oil pressure and oil filter housing and looking to add the mechanical type which is available from 'think autos'.

I've seen people recommend a product called blue hermotite. I can't see this product for sale anywhere. I've seen red which has now been renamed. So I'm looking for some suggestions as to what product to use. 

Many thanks. 

[Jonathan Kay]

Loctite 243 unless there's a special reason to use something else.

Jonathan

[SM25T]

You are thinking of Blue Hylomar .... which I use on threads or fuel gasket faces. It is a non-setting sealant that is resistant to oil and fuel. For bolt threads ..... loctite as above.

[Caterham7RandT]

Thanks. 

Ive seen the product blue hermetite (spelt wrong above) which I now understand is now called Hylomar mentioned as the product to use for the mechanical pressure modification. ill look to get both this and loctite as they both will be useful.  

 

[Superwhite R283]

Loctite 243 on the thread of the sender, think its 20Nm

Not sure if the oil filter housing gasket goes on dry or if blue hylomar or loctite 574 or simliar is added?

[oilyhands]

Don't use hylomar blue on threads it is non setting and won't effectively seal the thread against pressurised oil. As stated above use Loctite 243 or equivalent. The oil filter housing gasket should go on dry, if you must then a light smear of hylomar blue on the faces.

Oily

 

[Roger King]

Actually, if it's for hydraulic sealing rather than actual thread locking, I'd go for one of Loctite's hydraulic sealants. These seal better than thread locker and are easier to dismantle. Something like Loctite 577 would be ideal, although be aware that it only works on metal to metal joints.

If you are thinking of using Blue Hylomar, can I suggest you try using a chocolate tea pot first? It is completely the wrong application for this product.

[elie boone]

If it's to seal the tread of the sender you could use teflon or even masking tape will do the job.