3M 5200 Marine Sealant – Mahogany, 10 oz. Cartridge
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
3M 5200 Marine Sealant – Mahogany, 10 oz. Cartridge
3M 5200 in mahogany — the same legendary permanent-bond polyurethane formula, color-matched for teak, mahogany, and warm-toned wood trim on classic and traditional boats. It creates an incredibly strong, watertight bond that stays flexible for the life of the vessel, blending naturally into wood-finished surfaces where a black or white bead would stand out. The 10 oz. cartridge format is ideal for larger installations and production work.
Key Features
- One-part polyurethane — no mixing required
- Extremely strong permanent bond above and below the waterline
- Mahogany color — blends with teak, mahogany, and warm-toned wood trim
- Workable up to 4 hours after application
- Tack-free in 48 hours; fully cures in 5–7 days with no shrinkage
- Stays flexible — will not sag or flow in vertical or horizontal seams
- 10 oz. cartridge — requires a standard caulking gun
Compatible Applications
- Teak and mahogany deck seam sealing and structural bonding
- Wood-to-fiberglass hull and deck joints on classic and traditional boats
- Through-hull fittings and keel bolt bedding on wood-trimmed vessels
- Permanent bonding of teak deck hardware and trim pieces
- Any structural marine seam where a warm, wood-toned bead is preferred
Parts Desk Insights
Best Use Case: 3M 5200 Mahogany is the go-to for classic wooden boat restoration and teak deck work where color matching the sealant to the wood is essential — a black or white bead on a mahogany hull or teak deck looks out of place, and this solves that. As with all 5200 formulas, this bond is permanent: it is not recommended for hardware you may ever need to remove. For teak seam sealing where future serviceability is needed, a polysulfide compound like BoatLIFE Life-Calk or the BoatLIFE 1252 Teak Deck Sealant may be a better fit. For black or white 5200 cartridges, see the 3M 5200 – Black, 10 oz. Cartridge or the 3M 5200 – White Cartridge. For finishing the bead after application, the Star Brite Caulk Rite Finishing Tool delivers a clean, professional edge.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.