Heater Hose Firewall Seal

[JJSZABO]

What seals the firewall at the heater hoses?

It's hard to see in the picture but I have no seal.


The heater hose holes are oblonged, not round so round grommets will not work.

Thanks for looking.

[ccz145a]

Pretty sure there is a glob of asphalt type putty formed around the pipes on the inside. The same stuff used at the a/c housing openings around the accumulator on trucks equipped with that. Don't know where you get it, though. I used plumbers putty, but do not like the look of it. It's white and when touched with greasy fingers looks bad.

Maybe someone else knows more...

[JJSZABO]

Maybe use some black RTV sealant?

[VileZambonie]

Butyl Tape http://www.filmtools.com/butyl.html

[loudnlow87]

asphalt stuff will not work. at the body shop we use this stuff called dum-dum. thats just what its called. any autobody/paint supply, maybe even some parts stores, should have it.

[JJSZABO]

Thanks Guys

[Blazin]

Butyl tape. its what they used to use to put windshields in with. Some people call it dum dum.

[loudnlow87]

its not exactly the same stuff. butyl tape is MUCH stickier and harder to work with.

[VileZambonie]

its not exactly the same stuff. butyl tape is MUCH stickier and harder to work with.

Butyl tape is dumdum you can get it in round or flat.

[Blazin]

Hardware or lumber company's tend to sell the flat stuff more common as it is used for metal roofing.