3M 5200 Polyurethane Adhesive/Sealant

Priced: $10.99 Rated:   - 4 stars out of 5 by 13 reviews.
WestMarine.com $10.99
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3M 5200 Polyurethane Adhesive/Sealant -

Tenacious bonds and watertight seals above or below waterline

Provides exceptionally strong adhesion, yet stays flexible after it cures; may be used above or below the waterline. Ideal for underwater thru-hull fittings, hull-to-deck joints, portholes and bonding wood to fiberglass. Goes on smoothly, won't sag, and remains workable up to four hours. Cures in 5-7 days with no shrinking.

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3M 5200 Polyurethane Adhesive/Sealant Reviews:

Positive Reviews:

Lasted 3 days after opening

Over the years I have used several brands of marine sealents and bonding agents. This product hands down is the most reliable and all around useful product I have ever used. I found a great way to get the full use out of a large tube of 5200. Simply take it out of the caulking gun after its original use. Wrap kitchen use plastic wrap around the tip and stick it in the freezer. Its as simple as that. I have had one tube last up to 3 days after multiple uses.
TwinVee at WestMarine.com on 03/03/2011

Gets the job done in quick time

I mounted a T-top on my center console with this adhesive. The product does what it is suposed to. The fast cure skins over quickly, so be ready and positive about your parts placement.
Crusty Crab at WestMarine.com on 03/03/2012

great caulk

this is the best caulk. do not use the "5200 quick cure" ... it will yellow and come off after time, and it will crack under paint. The original 5200 is the best!
Dom at WestMarine.com on 05/05/2011

Really Works

Product works extremely well, however it wants to keep oozing out of the tip even when no pressure was being applied to the applicator squeeze gun.
Fishrman at WestMarine.com on 12/12/2010

Great product

This can be used in many applications where a strong but semi- flexible bond is needed. Best used where a slow set-up time is needed.
Steve at WestMarine.com on 07/07/2011

it's for keeps

this stuff works great but if you ever want to take it apart don't use this
Tra-sea at WestMarine.com on 04/04/2011

5200 sealant..

I use this all the time when putting in electronics, any thru hull fittings..
Gary Rosey at WestMarine.com on 11/11/2013

best adhesive

I have used this product extensively in three boat remodels.
rongarrett at WestMarine.com on 09/09/2010

Excellant Product

adhesive ans sealant around a vessel sink
Ken at WestMarine.com on 01/01/2014


Overall product was easy to use.
Bugs at WestMarine.com on 06/06/2011

Negative Reviews:

Not pleased

I purchased the 5200 for my thru hulls and it seems to be holding , though it was difficult to work with. I purchased more to help secure a strip of 316 SS down the bow edge to help hold the bow sprit / forstay system. It has been nearly eight months and it is as soft as window caulk. It never cured. The stuff is highly overrated.
Frustrated at WestMarine.com on 10/10/2013

No shelf life

When product arrived it appeared to have been on the shelf too long or improperly stored. Product would not flow from dispenser and appeared to have dried out and or began to harden.
d at WestMarine.com on 11/11/2010