Which exhaust sealer?

[KentishS2]

The sealing paste that dries hard is worse than useless and falls out after a while, this is the cause of blowing pipes on many cars without sealing rings clamped into the system.

All the S exhaust joints are sleeved so a sealing paste of some sort has to be used but can anyone recommend a good paste that will withstand the high temperature and remain flexible?

TIA!

[WildfireS3]

I used that high temp silicone. Still soft and still sealing ok.

[KentishS2]

WildfireS3 said:

I used that high temp silicone. Still soft and still sealing ok.

Hi Chris,

Can you remember what it was called and who made it?

I'm going to have the entire system apart and re-seal everything when the new exhaust goes on.

[HarryW]

Do you have a part number or a brand name or accurate description for this them there high temp silicon stuff . I've been on the look out for this stuff for alittle while but never seen any .

Harry

[KentishS2]

HarryW said:

Do you have a part number or a brand name or accurate description for this them there high temp silicon stuff . I've been on the look out for this stuff for alittle while but never seen any . Harry

Hi Harry,

Exhaust sealing can be a real problem on the S because it doesn't have any seals as such and relies on the sealing gum you use and most sealers dry hard and blow out.

The most common types of paste are used for exhaust assembly on sleeved joints on standard cars where it is usually in a much lower temperature environment like the rear box. Front pipes on mainstream cars usually have soft metal sealing rings that fit inside a sleeved flange and compress when you clamp it all together.

[HarryW]

Not too fussed about the exhaust side of it I was more interested in getting the high temp silicon for when I pull the plenum and other induction areas apart .

Harry

[WildfireS3]

I'll have a look around the garage. it's all a bit of a mess at the moment and I left it there last year in summer, before I left for Newcastle. Fingers crossed it should be around, but I had no issues getting it. It was only a small tube mind. Not one of those big gun type things.

[KentishS2]

WildfireS3 said:

I'll have a look around the garage. it's all a bit of a mess at the moment and I left it there last year in summer, before I left for Newcastle. Fingers crossed it should be around, but I had no issues getting it. It was only a small tube mind. Not one of those big gun type things.

Much appreciated Chris, mines in on Friday so I'll need to get hold of some for then

>> Edited by KentishS2 on Monday 17th January 17:59

[KentishS2]

This stuff is OK up to 260 degrees C.

www.intek-uk.com/rtv382.htm

But what is a manifold temperature likely to be?