3M 5200 Marine Sealant – White Cartridge | 06500
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3M 5200 Marine Sealant – White Cartridge
3M 5200 is a one-part polyurethane marine sealant and adhesive known for its exceptional bonding strength and long-term flexibility. It creates a permanent, watertight bond above and below the waterline, making it the go-to choice for structural marine joints where the connection needs to hold indefinitely — hull-to-deck seams, through-hull fittings, keel bolts, and other critical bonding applications.
5200 stays flexible after curing, accommodating the movement and vibration inherent in marine structures without cracking or losing adhesion. It won’t sag or flow in vertical or horizontal seams, and remains workable for up to 4 hours after application.
Specifications
- SKU: 06500
- Color: White
- Format: Cartridge (for standard caulking gun)
- Chemistry: One-part polyurethane
- Tack-Free Time: 48 hours
- Full Cure Time: 5–7 days
- Workable After Application: Up to 4 hours
- Shrinkage: None
- Weight: 454 g (1 lb)
- UPC: 638060094990
Features
- Extremely strong bond above and below the waterline
- Stays flexible after curing — accommodates structural movement and vibration
- No shrinkage during cure
- Won’t sag or flow in vertical or horizontal seams
- Workable up to 4 hours after application
- Bonds fiberglass to fiberglass, wood to fiberglass, and other common marine substrates
- Easy application with a standard manual caulking gun
Compatible Applications
- Hull-to-deck seam bonding and sealing
- Through-hull fitting installation
- Keel bolt bedding
- Portlight and hatch frame bedding
- Structural bonding of fiberglass deck to fiberglass hull
- Wood-to-fiberglass bonding applications
- Any marine joint requiring a permanent, high-strength, flexible seal
Related Products
- 3M 5200 Marine Sealant – Black
- 3M 5200 Marine Sealant – Mahogany
- 3M 5200 Fast Cure Marine Sealant – White (295ml)
Parts Desk Insights
Best use case: 3M 5200 is the right choice when you need a bond that is meant to be permanent — hull-to-deck joints, keel bolt bedding, and through-hull fittings where you never want the joint to come apart. The bond strength is exceptional, but that’s also the caution: once cured, 5200 is extremely difficult to remove without damaging the substrate.
If there’s any chance you’ll need to disassemble the joint in the future — for hardware replacement, deck fitting service, or inspection — consider 3M 4200 or a polysulfide sealant instead. 5200 is the right call for permanent structural bonds; it’s the wrong call for anything you might need to remove later. Also note the 5–7 day full cure time — plan accordingly before launching or loading the joint.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.