3M 5200 Marine Adhesive Sealant
4.6Best price now
$22.48at Home DepotObserved at 7:07 PM
30% under what the other stores charge
Compared across 5 stores. Prices are checked against each store and labelled with when.
30% under what the other stores charge
Compared across 5 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
3M 5200 is a one-component polyurethane adhesive sealant for boats, bonding wood, fiberglass, gelcoat, metal and plastic above and below the waterline. It cures with moisture into a permanently flexible, high-strength bond and resists sagging in vertical seams. Working time is long and full cure can take up to 4 days. The best new price is $22.48 at Home Depot as of November 4, 2026, with 4 stores listing it new.
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Availability unknownSold by bbs_industries (99.9% positive, 10,300 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $22.48 on Nov 5 at Home Depot. Tracked across 12 stores since Nov 5.
Owners rate it highly (4.6 of 5 from about 1,000 ratings) and treat it as a go-to permanent marine bond. Most praise its holding power underwater and its flexibility. The common complaint is how long it takes to cure and how hard it is to undo.
3M Marine Adhesive Sealant 5200 is a multi-purpose adhesive sealant made specifically for the marine market. This high-strength adhesive forms a weather-resistant seal. It's unique formula reacts with moisture and provides plenty of working time, taking up to 4 days to fully cure. Ideal for use above and below the waterline, it reliably bonds dissimilar materials including wood, fiberglass, gelcoat, plastics, and metals. Polyurethane sealants such as this form permanently flexible, elastomeric bonds that seal against the elements, maintain joint movement, and absorb stress caused by shock, vibration, swelling or shrinking. Such durability, versatility, and flexibility prepare 3M Marine Adhesive Sealant 5200 for tough applications like sealing portholes, deck/hull fittings, rub rail attachment, screw holes, and stanchion supports.
