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Radiator Gasket

Posted: Sun Nov 11, 2012 8:37 pm
by Pabst
I am in the process of installing a new radiator with new cork gasket from TM. My question is with the cork gasket, I was going to put a bead of silicon caulk on the gasket is this necessary or will encounter problems later. Thanks!

Re: Radiator Gasket

Posted: Sun Nov 11, 2012 8:47 pm
by bob in CT
Some will tell you no- the gasket is engineered. I coat my gaskets with a thin film of Ultra Gray by rubbing it in with my thumb and forefinger to get an even, thin film over the entire surface. With gloves, of course- it gets a little messy. It never leaks.

Re: Radiator Gasket

Posted: Sun Nov 11, 2012 8:50 pm
by Pabst
Thanks Bob! :D

Re: Radiator Gasket

Posted: Sun Nov 11, 2012 8:52 pm
by phildidit
Definately make sure it is a thin coat. You don't want it to goop into the radiator

Re: Radiator Gasket

Posted: Sun Nov 11, 2012 10:35 pm
by John *.?-!.* cub owner
I use a very thin coat of RTV on both sides of the gasket. Just a film.

Re: Radiator Gasket

Posted: Sun Nov 11, 2012 11:21 pm
by cub47
As mentioned, there are many types of gasket sealants that will work, I use "Indian Head" brand shellac based sealant from NAPA for all of my gaskets on a cub tractor, I apply it to both metal surfaces on either side of the gasket, works great.

Re: Radiator Gasket

Posted: Mon Nov 12, 2012 8:58 am
by ntrenn
I have been using the aviation gasket sealer as recommended by my local cub tech.

http://www.oreillyauto.com/site/c/detai ... d=aviation

and nary a drop from any gasket.

Re: Radiator Gasket

Posted: Wed Nov 14, 2012 8:19 am
by Bill E Bob
ntrenn wrote:I have been using the aviation gasket sealer as recommended by my local cub tech.

http://www.oreillyauto.com/site/c/detai ... d=aviation

and nary a drop from any gasket.


Love that stuff, has been used on 5 Cubs and no leaks :{_}:

Re: Radiator Gasket

Posted: Thu Nov 15, 2012 12:01 pm
by ntrenn
Bill E Bob wrote:
ntrenn wrote:I have been using the aviation gasket sealer as recommended by my local cub tech.

http://www.oreillyauto.com/site/c/detai ... d=aviation

and nary a drop from any gasket.


Love that stuff, has been used on 5 Cubs and no leaks :{_}:


He's probably worked on on as many cubs as Boss, so his advice usually gets full consideration from me. Wish I would have asked him about that sealer before I did the oil pan on my '63.....

Re: Radiator Gasket

Posted: Thu Nov 15, 2012 12:50 pm
by Pabst
Good to know, thanks for the information. I will put my gasket on tonight. :D