mmurphy77

I will be replacing my entire system with a factory correct system and I'm trying to find assembly paste and it's proving harder than I thought. The factory used a paste that eased the assembly and 'sealed' the joints. I can't find it anywhere locally. AFAIK it's not the same as Muffler repair stuff that cures rock hard.

MDchanic

Just use some "Anti-Seize" or Nevr-Seize" (different manufacturers).

The copper Aviation stuff is the cat's pajamas.

- Eric

ps: Don't use too much, though, and don't use it on the nuts, or your exhaust system will fall off your car. Ask me how I know.

Davesrocket

NAPA used to sell Soundmaster exhaust sealant. It was a paste that came in a tube. I believe it is what you are looking for. I have used a bunch of it over the years.

mmurphy77

Thanks guys! This is what Napa has is that what you were referring to?:
https://www.napaonline.com/Catalog/C...516_0282385798 or https://www.napaonline.com/Catalog/C...335_0006383754
It says it hardens with heat which I guess is ok once I have the system positioned and tightened.

MDchanic

I wouldn't use either one of those - they look like silicate sealers, which harden up like cement and are very brittle - normal engine vibrations will crack them up and shake them lose.

Why are you looking for a sealer anyway?
I use Nevr-Seize to keep the pipes somewhat disassemble-able in case of future problems, but I've never heard of anyone using sealers on new exhaust systems.

- Eric

mmurphy77

I agree I don't want muffler cement so I guess the anti-seize is the way to go. My main concern is ease of installation as struggling with tight fitting pipes can old real quick.

MDchanic

ALL exhaust work gets old real quick.

- Eric

Davesrocket

Yep, that's the stuff, different packaging than back in the day, but the same stuff. It will ease assembly and seal things up. But if you don't want it rock hard, you better try something else. Unless you are going to take things apart later, I don't know why it would matter if it hardens. Just wipe off the excess after tightening.

rustyroger

Seems strange to me, go to any auto parts store in the UK and they will have exhaust assembly paste on the shelf.

Maybe over there exhaust are normally fitted and welded into one piece?. Here exhausts normally come in sections and are clamped with U bolts, the paste is lightly spread round the connecting ends on assembly and seal up any distortions.

Roger.