Seals cracks, crevices and body seams, plus waterproofs and insulates
The Eastwood Service PlanProtect your purchase with comprehensive coverage24/7 supportNo deductibles, no additional feesParts & labor costs includedTransferable coverage and more
90 day Warranty Included
90 Day Returns + 100% Satisfaction Guarantee
FREE Lifetime Tech Support
The Eastwood Company Warranty
100% Customer Satisfaction Guarantee
At Eastwood we care about your DIY automotive projects and want you to be 100% satisfied with our products. That’s how we’ve done business since 1978.
Warranty periods vary per product and manufacturer.
The warranty period begins on the date the product is delivered.
Warranty refunds and exchanges require proof of purchase.
To obtain warranty coverage, contact Eastwood at 1-800-343-9353 for an RMA number.
FREE Lifetime Tech Support
We're here to help you Do The Job Right.
This product includes FREE Lifetime Tech Support from our U.S.-Based Customer Solutions Team.
Looking for advice on your project or product recommendations? Our in-house Project Advisors have the same passion for DIY automotive restoration as you do. Get advice on your project, personalized product recommendations and answers to your questions. Give us a call or email [email protected].
After stripping a car or repairing a panel you should replace the seam sealer to protect your work from the elements.
Flexible - Will not shrink, harden or crack
Seals cracks, crevices and body seams
Paintable in 30 minutes
Waterproofs and insulates
Eastwood's Brush-On Seam Sealer leaves a factory-like finish and will not crack, harden or sag. Seals cracks, crevices and body seams as well as waterproofs and insulates. Tack dries in 15 minutes and air dries in 1hour. Remains flexible. Gray in color. Can be painted in 30 minutes.
Can be used on:
Firewall
Trunk seams
Fender extensions
Tail light openings
Floor pans
Many other areas
What's Included
30.4-fl.-oz. (1.9 pt.)
Safety Information
always wear eye, skin and respiratory protection when working with chemicals consult MSDS for proper safety warnings
Clean surface with Eastwood's PRE painting prep (10041Z) Apply a bead using a brush or finger. Tack dries in 15 minutes Paintable in 30-45 minutes Clean excess with PRE
Operation Temperature is between -4 degrees F to 158 degrees F.
Rated 5 out of
5 by
Bob l from
It adhers great. It is thick enough to seal some bigger seams.I am restoring a 66 mustang. I am sealing all my seams with this.
Date published: 2025-05-28
Rated 5 out of
5 by
Bob P from
Seals out the waterJust like OEM. use a stiff brush to duplicate factory appearance.
Date published: 2024-11-04
Rated 5 out of
5 by
Phil from
'66 Mustang total floor replacementAn excellent product. Has a heavy consistency, so you need a sturdy brush. I bought several 1" throw away brushes from Home Depot, and they worked fine. Replaced floors in '66 Mustang project. After applying rust pre-treatment, I applied seam sealer, then POR15, then a body shutz product.
Date published: 2024-02-15
Rated 5 out of
5 by
Bodunk from
Eastwood seam sealerIt went on easy and looks like it should do what it is intended to do.
Date published: 2023-11-02
Rated 5 out of
5 by
James from
seam sealergreat product,easy to use and got the job done the first time.
Date published: 2023-07-13
Rated 5 out of
5 by
Sealer from
Good stuffBought this year's ago. Been used and sits on shelf for year's. Still good after that long. Probably been 4 years all together
is there a way to smooth it out us
like using a solvent on your fingertip and wiping it
Asked by: 94 wrangler
Yes, you can smooth out Eastwood Brush-On Seam Sealer for a cleaner finish, and using a solvent on your fingertip or tool is a common technique — but it must be done correctly to avoid affecting adhesion or curing.Use a gloved finger or a small plastic spreader for shaping.
Dip your glove or tool in an approved solvent like:
Eastwood PRE Painting Prep
Lightly wipe or shape the seam sealer while it’s still wet — don’t oversaturate.
Answered by: James Project Advisor
Date published: 2025-11-13
What prep work is needed to topcoat this after a week or 2?
Asked by: Fish
Gently use Eastwood Pre paint prep and wipe all contaminants clean. Then you should be able to topcoat with any of our epoxy or urethane products.
Answered by: Wil Tech Support
Date published: 2025-11-14
what is the best temperature to apply the paint on seam sealer or are there and temperature requirements that I need to be aware of before applying this product.
Asked by: Twhite
Seam sealer should ideally be applied or painted at ambient temperatures between 70°F and 90°F. If the temperature is below 70°F, the surface should be warmed using a heat lamp during application and curing. Tack dries in 15 minutes and air dries in 1hour. Can be painted in 30 minutes.
Answered by: Bill G Tech Advisor
Date published: 2025-11-14
will warming up the sealer make it easier to apply?
Asked by: chuck
This should not be heated because it is a Highly flammable liquid.You should always keep this product away from heat, hot surfaces, sparks, open flames and other ignition sources.
Answered by: James Project Advisor
Date published: 2025-11-14
I'm tidying up the cowl well on my 77 Fiat 124 Spider. Can I use this product as an overlay to smooth out the existing factory-applied sealer which appears to be an asphalt type? After cleaning of course.
Asked by: Peter
I'm not absolutely sure if it is compatible with the factory, although if you scuff it up and use our pre paint prep it will probably work.
Answered by: Anonymous
Date published: 2025-11-13
As an adhesive, how strong is it? What is the best way to bond it with the metal, applying it to bare clean metal or primered and scuffed?
Asked by: Jolly Rodger
Its not about strength
After stripping a car or repairing a panel you should replace the seam sealer to protect your work from the elements.
Flexible - Will not shrink, harden or crack
Seals cracks, crevices and body seams
Paintable in 30 minutes
Waterproofs and insulates
Eastwood's Brush-On Seam Sealer leaves a factory-like finish and will not crack, harden or sag. Seals cracks, crevices and body seams as well as waterproofs and insulates. Tack dries in 15 minutes and air dries in 1hour. Remains flexible. Gray in color. Can be painted in 30 minutes.
Answered by: Anonymous
Date published: 2025-10-28
How thin will seam sealer be effective? Have a 1/16 x 1/16 seams?
Asked by: JimW
Brush it on without making it too thick and it will seal. Only id you are working on angled seams you may need to apply a second cost.
Make absolutely sure you have a clean surface.
Answered by: Anonymous
Date published: 2025-11-14
Will Eastwood brush on seam sealer withstand under hood temperatures?
Asked by: alfa guy
Eastwood Brush on Seam Sealer Quart
Operation Temperature is between -4 degrees F to 158 degrees F.
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