Seam sealer

[Resto-Rand]

Ok, I went to the paint and bodywork forum and got 0 responses so far. I did a search and none of the threads answer my question.

So here I am where I hang out with my question.

Does anyone know if 3M 08505 seam sealer will eventually harden up if applied 1/2" thick in some areas?

Thanks so much for any info. I couldn't prime it because I didn't know. And now the cab is covered because we expect rain.

[sduckworth13]

Check this thread out. It might help you out.
http://www.67-72chevytrucks.com/vboa...d.php?t=262436

[Resto-Rand]

Thanks for playing but it still doesn't answer my question. If I would have seen that first I may have tried layers but, I need to know if it will eventually harden.

[29od1]

It will eventually, just depends on the temp. The data sheet says the 30min dry time is based off a 1/4" bead at 70 deg.

[frankslagoon]

I wish I knew for for sure what number the stuff I got at napa was it was a 3m product though. I used it on the rain gutter on the 70 c10 and it did set up but it took forever. I used the same stuff on the 63 rain gutter only it was a lot thicker fill. it skimmed over and never did dry. I had to dig it all out and start over and just put a thinner fill in. I think we need something that dries from a chemical reaction rather than air. probably could put multiple layers in and the 3m stuff would work ?

[29od1]

I agree that a 2 part epoxy is a better way to go.

[88Ironduke]

I have been reading many threads on the subject but I haven't seen any one talk much how these products work when sealing vertical locations like the back side the drip rails on our trucks. I get the self leveling part and it looks pretty simple. The drip rails require a fairly substantial amount all the way around and going vertical is something that isn't discussed in any length that I have found. Is It going to self level into a pool of goo on my garage floor?

Paul

[29od1]

You can use the self leveling on the flat areas, but you'll need something like 3m 08308 for the vertical parts. Otherwise it'll end up on your floor...

[jgb7038]

I use alot of the 3m 08310 and 08308. Both are 2 part sealers. The 08310 is a direct to metal product but works well over primers and sealer. It is a very light cream color,its almost see through. The 08308 is made to go over sealers,and primers but not direct to metal. It is black.

I use both at work, and on my personal projects. I think the work time is some where in the 15 minute range,but would have to check the data sheets. You can use 3m general purpose adhesive remover on you finger to smooth the 08308 out as your working it if you are doing larger areas,I know this works,it also lets you work it a little longer as well.You just have to use small amounts of the remover,basically getting the tip of your finger wet is all it takes to smooth it out if you need to.

They both work very well on vertical and over head joints. They also will not shrink. I had some of the one part 3m sealer shrink and crack on my drip rail of my panel truck.

I do know that the cost is a little more for the product,but it is well worth it. You do have to use a special gun for them,but they have gotten way down on price in recent years, I have run across deals on some of the sites where you can get a gun and a tube of product for about $50. There is a whole line of other products that the gun can be used for also.

I dont know if that's the kind of answer your looking for,but maybe it will help.

[frankslagoon]

Good info jgb7038

[JimKshortstep4x4]

Here is a link to good information on seam sealers, (properties of seam sealers and application).

Jim

http://autobodystore.com/forum/showt...ot-Seam-Sealer