Gasket Sealer

[wrecker03]

I'm using Cometic gaskets for my top end rebuild. Do I need anything on them like Permatex? The stock gaskets come with a type of sealer on them the Cometics don''t have anything. Should I use like Permatex copper? I didn't see any mention of it in the Clymers manual.

[cam2]

I'm using Cometic gaskets for my top end rebuild. Do I need anything on them like Permatex? The stock gaskets come with a type of sealer on them the Cometics don''t have anything. Should I use like Permatex copper? I didn't see any mention of it in the Clymers manual.

you shouldn't have to. are the cometics fiber (paper like) or are they the ones with a thin metal core covered with a thin rubber like coating. if they are the latter then i definitely wouldn't use anything on them, they are great gaskets. if they are the fiber type you could call cometic and ask them but i bet they'll tell you not to use anything on them. let us know what you find out.

[wrecker03]

Cometic says their gaskets are designed to be installed with nothing on them, in case anyone was wondering.

[dajogejr]

If they are paper, I'd be using a thin coat of high temp RTV...but that's just me.

If they're are the rubber kind with a sealing wire, no need.

[Screaming Yellow Zonker]

my old boss use to take the paper gaskets and soak them in water then install them while they are wet. it makes them seal great but harder to remove when time comes. It will basically glue them self to both surfaces.

[05DuramaxDiesel]

my old boss use to take the paper gaskets and soak them in water then install them while they are wet. it makes them seal great but harder to remove when time comes. It will basically glue them self to both surfaces.

 

that sound like an interesting method, I'll have to try that some time.

[Snopczynski]

If I am installing any sort of plain steel gasket I always use copper coat on it.