Hermetite Red

[Boathook]

Hylomar Ltd is a company which manufactures a wide range of high performance sealants & adhesives used by some of the world's leading automotive, aerospace, white goods, power generation / distribution, electronics / photonics, engineering & industrial OEMs.

Hylomar Universal Blue is the non setting sealant and gasket compound based on the original product developed in conjunction with RR

Used to use the blue on my minis. Reduced oil use by a lot !

 

[Poignard]

What would you 'rude mechanicals' use for on the threads of a screwed connection in an exhaust system, such as that shown below.

It is for a BUKH DV10.

In the past I have used Coppaslip, which I happen to have on board, but whenever I needed to remove a cracked exhaust elbow (something that happens every few years) I have never been able to unscrew the elbow with the tools I carry on board and have ended up breaking it off with a hammer and cold chisel.

 

[penberth3]

What would you 'rude mechanicals' use for on the threads of a screwed connection in an exhaust system, such as that shown below.

It is for a BUKH DV10.

In the past I have used Coppaslip, which I happen to have on board, but whenever I needed to remove a cracked exhaust elbow (something that happens every few years) I have never been able to unscrew the elbow with the tools I carry on board and have ended up breaking it off with a hammer and cold chisel.

View attachment 171724

Obvious problem is the heat. My first thought is some sort of paste. There was "Gun Gum" for patching car exhausts but that set very hard which isn't what you want. I can't think of a high temperature non-setting paste at the moment, there must be something.

 

[Revellers]

I went to use a tube of instant gasket the other day, although it felt squidgy, I found the tube was 80% solid rubber and 20% 'air' (maybe some other gas!), the tube was un-opened but a few years old.
A last minute dash to the local motor spares place to pay twice the on line price.....

The original Red Hermetite was not a silicone rubber, it was more like thick varnish with red powder in it, it would settle like paint over time. I still have an inherited tube of Calor Tite gas joint compound which is quite similar to Red Hermetite. As in, disgusting messy stuff, usually found in (and around) a tube stuck to the inside of a toolbox.

I've ordered some new stuff as recommended by the manufacturer of the item I'm rebuilding will let you know if its gone off. I bet it has. As I recalled as mentioned prior the hermertite red was a putty type and hermetite blue was sillicon

 

[Revellers]

What would you 'rude mechanicals' use for on the threads of a screwed connection in an exhaust system, such as that shown below.

It is for a BUKH DV10.

In the past I have used Coppaslip, which I happen to have on board, but whenever I needed to remove a cracked exhaust elbow (something that happens every few years) I have never been able to unscrew the elbow with the tools I carry on board and have ended up breaking it off with a hammer and cold chisel.

View attachment 171724

Duralac everyone rating this stuff. I haven't used it as yet tho