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Old 04-13-2011, 12:42 PM   #1
Habitual
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Seam Sealer Vs Bathroom Caulk/Silicon

As I do my rebuild I know I will need to seal up the seams int he sheet metal I am replacing. After doing some research I can't seem to find a good compairative of these.

So...

3M Seam Sealer ~20.00 online
3M Automotive (MMM8361) 3M Ultrapro Urethane Seam Sealer, Gray, 310 mL Foil Pack

Product Description

High solids seam sealer ideal for sealing interior and exterior automotive and RV seams and joints
Adheres well to primed metal and paintable surfaces
Can be smoothed to a featheredge and/or brushed
Tack free and paintable in 30 minutes
Will not shrink or crack, and can be baked at higher temperatures than ordinary seam sealers
Flexible, damage resistant foil package allows virtually 100% usage. More economical than conventional cartridges. Specifically designed applicator gun, part number 08398, provides professional results. Duplicates OEM sealer appearance.


or

Silicone Caulk ~7.00
Dap 08640 Bathroom Silicone Rubber Caulk 10.1-Ounce White

Technical Details
All purpose bathroom caulk
Seals nonporous surfaces around ceramic tile and plumbing fixtures with 100-Percent silicone rubber
Meets requirements of FDA regulation number 21 CFR 177 2600
White
10.3 fl-Ounce

Product Description
From the Manufacturer
Superior quality, multi-purpose sealant. Offers long-lasting flexibility and excellent adhesion. Provide a weatherproof, watertight seal. Resists cracking, crumbling and chalking. Interior/exterior use. 50 Year Durability Guarantee. Meets Federal Specification TT-S-001543A, Class A.
100% silicone rubber with mildicide. Excellent for sealing around ceramic tiles and plumbing fixtures. Won't crack, crumble, or dry out. White. No. 00680: 3 oz. squeeze tube No. 08640: 10 oz. cartridge




Has anyone had any issues with using the caulk? Has anyone used both and do they have pros/cons vs one another?
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Old 04-13-2011, 01:21 PM   #2
miesk5
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Roof/Drip Rail Seam Sealing Directions; 3M™ Ultrapro™ Autobody Sealant; as cited in TSB 95-09-05
Source: by 3m.com

Wait to dry before applying paint over the sealer. Thicker beads of seam sealer will take longer to
cure before painting. The stated dry time before painting is based on a 1/4" bead at 70 deg F

Body Repair Adhesives Guide
Source: by Ford Motorcraft® fcsdchemicalsandlubricants.com
Seam Sealer

Fast-curing
Permanently flexible
Excellent bond strength
Paintable in 10 minutes
Will not shrink, crack or peel
Bonds to all primed or painted metals, and most automotive plastics
Heavy bodied, non-sag formula
Immediately bakeable
Typical applications include: Duplicating factory look on: standing cosmetic seams, truck bed seams, tooled door skin seams, floor pans, core supports. Anywhere a non-sag, cosmetic seam sealer is required.
Available in 10.3 fl. oz. (305 ml) aluminum caulk tubes
Part Number TA-2
Specification Number N/A
Size 10.3 fluid oz.
FIR No. 181251
Unit Pack 1
===================
Ford Body Repair Adhesives Guide
& Ford's Entire Body Repair Products;
Anti-Corrosion Coating
Isopropanol Cleaning Kit
Manual Dual Cartridge Applicator Gun
Metal Bonding Adhesive
Metal Surface Prep
Plastic Bonding Adhesive
Pneumatic Dual Cartridge Applicator Gun
Premium Undercoating
Rust Inhibitor
Seam Sealer



DAP® Kitchen and Bath 100% Silicone Sealant Technical Bulletin by DAPNot paintable. Paint surfaces before sealing.
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Old 04-13-2011, 01:21 PM   #3
miesk5
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Bronco Info: 96 XL 5.0 E4OD, Man Xfer/Hubs
Roof/Drip Rail Seam Sealing Directions; 3M™ Ultrapro™ Autobody Sealant; as cited in TSB 95-09-05
Source: by 3m.com

Wait to dry before applying paint over the sealer. Thicker beads of seam sealer will take longer to
cure before painting. The stated dry time before painting is based on a 1/4" bead at 70 deg F

Body Repair Adhesives Guide
Source: by Ford Motorcraft® fcsdchemicalsandlubricants.com
Seam Sealer

Fast-curing
Permanently flexible
Excellent bond strength
Paintable in 10 minutes
Will not shrink, crack or peel
Bonds to all primed or painted metals, and most automotive plastics
Heavy bodied, non-sag formula
Immediately bakeable
Typical applications include: Duplicating factory look on: standing cosmetic seams, truck bed seams, tooled door skin seams, floor pans, core supports. Anywhere a non-sag, cosmetic seam sealer is required.
Available in 10.3 fl. oz. (305 ml) aluminum caulk tubes
Part Number TA-2
Specification Number N/A
Size 10.3 fluid oz.
FIR No. 181251
Unit Pack 1
===================
Ford Body Repair Adhesives Guide
& Ford's Entire Body Repair Products;
Anti-Corrosion Coating
Isopropanol Cleaning Kit
Manual Dual Cartridge Applicator Gun
Metal Bonding Adhesive
Metal Surface Prep
Plastic Bonding Adhesive
Pneumatic Dual Cartridge Applicator Gun
Premium Undercoating
Rust Inhibitor
Seam Sealer



DAP® Kitchen and Bath 100% Silicone Sealant Technical Bulletin by DAPNot paintable. Paint surfaces before sealing.
__________________
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USN & DoD Planner (ret)
THANKS to ALL WHO SERVE!

my broncolinks.com was "disturbed"; but some sections are archived @ [url]http://web.archive.org/web/20121009110424/http://www.broncolinks.com/index.php
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Old 04-13-2011, 01:27 PM   #4
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You might look at a caulk that is paintable, usually the bathroom caulk is not paintable. DAP makes a variety of external use caulk, like for windows, that supposedly adheres to metal (like aluminum window frames?), and has a 20yr life (again supposedly). Just my 2 cents, good luck.

(Damn, meisk5 beat me by 5 minutes)

Last edited by Mikey350; 04-13-2011 at 01:28 PM. Reason: some data same as miesk5
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Old 04-13-2011, 03:45 PM   #5
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Old 04-13-2011, 03:48 PM   #6
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Indeed miesk5 seems to be a veritable cornucopia of information
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Old 04-13-2011, 04:10 PM   #7
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Quote:
Originally Posted by Habitual View Post
Has anyone had any issues with using the caulk? Has anyone used both and do they have pros/cons vs one another?
Seam sealer is made to fill seams and to some extent bond metal parts together, (but is not a replacement to body adhesive in that respect) on a vehicles that are constantly moving, and contracting and expanding due to flex and temperature change.

Bathroom Calk is made to stop water from going between two objects that never move, flex, or see extreme changes in temperature, it has almost no adhesion ability and a very low shear strength.

Which one do you think would work better?
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Old 04-13-2011, 04:31 PM   #8
Habitual
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Quote:
Originally Posted by Habitual View Post
Product Description
From the Manufacturer
Superior quality, multi-purpose sealant. Offers long-lasting flexibility and excellent adhesion. Provide a weatherproof, watertight seal. Resists cracking, crumbling and chalking. Interior/exterior use. 50 Year Durability Guarantee. Meets Federal Specification TT-S-001543A, Class A.
100% silicone rubber with mildicide. Excellent for sealing around ceramic tiles and plumbing fixtures. Won't crack, crumble, or dry out. White. No. 00680: 3 oz. squeeze tube No. 08640: 10 oz. cartridge
As you can see the above particular product information was why I asked. They seem very similar. Looking over what people have posted I think I am going to go with the seam sealer.
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