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Seam sealer question

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fabmandan

fabmandan

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I've been cleaning the bottom of my Sprite and on all of the weld seams in the back there is white seam sealer that is like putty. I haven't seen anything like this before. Does anyone know what this is and where I can get some new.

Thanks
 
It's also available online from places ranging from Eastwood to JC Whitney.
 
I picked up a can at eastwood. works fine. Hardens well. Not flexible though and doesn't look original. Can also be filed or sanded.
 
3M has the right stuff.
 
3M 5200!! Comes in slow cure and fast cure, toothpaste-tube size to caulking-gun size!! /bcforum/images/%%GRAEMLIN_URL%%/wink.gif /bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif
 
Thanks, but what I need is wrapped around the weld seams. It's stiff but not hard. I have some sealer in a caulking tube, but that's for inside corners and flat seams. All the auto body stores near me have closed and when I've called different places (before I drive 20 miles) they have no idea what I'm talking about. On my car this sealer is on the rear wheel tub seams and other weld seams in the rear of the car.
 
Dan,
I know this might seem odd, but Frost King's Mortite rope caulk is what I have used. It is light gray in color and does not get hard. It can be painted over. When these cars were made they did not have all the complex synthetic sealers we have today. The under coating and the seam sealer on the fire wall was basically a tar compound like our modern roofing patch. If you ever see an original you can see how the paint cracks and even gets stained from the black sealer. The rope caulk was the closest thing I found for the seams you are referring to. There was also a glob of it around the spring perches on quater elliptical cars. There are modern automotive products that would work as well or better, but if you want to duplicate the original, you have to step back in time and use products that would have been around back then. I use roofing cement for the inner rear wheel wells. The Austin Healey Club judges always thought it was still the original. I prefer to use the 3M products where I can because they are more durable and hold paint better.
 
I use Eastwood's seam sealer; as Steve says, not period accurate, but easy to apply, and stays slightly flexible. Easily paintable, and available in containers from small to gallon-sized. (My VW resto requires the latter!)

They do also have the tar-based rope stuff, that stays sticky forever!

Seam sealer - https://www.eastwoodco.com/jump.jsp?itemID=1595&itemType=PRODUCT

Caulk tube - https://www.eastwoodco.com/shopping/produ...iProductID=1674

Rope seal - https://www.eastwoodco.com/shopping/produ...iProductID=1621
 
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