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3M

3M Marine Adhesive Sealant 5200, White, 1 oz Tube

  • Based on 10,605 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sep 25 – Sep 26
Order within 20 hours and 37 minutes
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Color: White


Size: 1 fl oz


Features

  • POWERFUL MARINE SEALANT: A permanent solution for bonding marine substrates like wood, fiberglass, and metal
  • VERSATILE APPLICATIONS: Tough yet flexible polyurethane polymer is ideal for deck housings, hull fittings, porthole mounting, fiberglass transoms, and underside molding
  • WARD OFF WATER: Resists saltwater and weathering both above and below the water line
  • FLEXIBLE BONDS: Its elastomeric bond absorbs the stress of vibration, swelling, shrinking, and shock
  • LONG WORKING TIME: Allows plenty of working time, achieving handling strength in 48 hours
  • For industrial/occupational use only. Not for consumer sale or use
  • High performance polyurethane adhesive/sealant becomes tack-free in 48 hours, cures completely in 5-7 days
  • Strong seal retains strength above or below the water line
  • Excellent resistence to weathering and saltwater
  • Marine, general industrial
  • Bonding, attaching and assembling

Description

3M Marine Adhesive Sealant 5200 is a tough, flexible polyurethane for permanent bonding and sealing your RV, boat or other watercraft. It is ideal for use on wood, gelcoat, fiberglass, metal and more. It is recommended for interiors, below the waterline and any other places that are shielded from sunlight. It applies right from the container – no mixing is required. It becomes tack-free in 48 hours, and cures to form a firm, flexible, waterproof seal on joints and boat hardware. Far more than a marine caulk, tough, flexible Marine Adhesive 5200 dissipates stress caused by vibration and shock, and won’t crack under dynamic force. It resists saltwater, wind, weather and temperature extremes for long periods of worry-free enjoyment on the water. In fact, for more than 50 years, 3M Marine Adhesive Sealant 5200 has been used and trusted as a marine sealant by professionals in some of the most demanding conditions on earth. Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs.

Material: Plastic


Brand: 3M


Style: 5200


Item Weight: 0.04 kg


Item dimensions L x W x H: 1 x 3.9 x 6.8 inches


Brand Name: 3M


UPC: 051135052068


Number of Packs: 1


Unit Count: 1 Fluid Ounces


Item Highlight: Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair


Global Trade Identification Number: 68


Number of Items: 1


Included Components: 3M Marine Adhesive


Item Type Name: 3M Marine Adhesive Sealant 5200


Manufacturer: 3M


Model: 3004.78


Part Number:


Warranty Description: Warranty


Item Weight: 0.04 kg


Item Dimensions: 1 x 3.9 x 6.8 inches


Water Resistance Level: Waterproof


Item Form: Liquid


Compatible Material: Fiberglass


Style Name: 5200


Color: White


Surface Recommendation: Wall


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 25 – Sep 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Absolutely amazing product
Color: White Size: 10 fl oz
Purchased this product to attempt to seal a challenging flashing issue which has three different material in an awkward transition. I removed all the material from the previous two attempts to waterproof the area, leaving a larger than previous opening to work this material into. After cleaning and prepping the surfaces, I began to applying this 3M product. It is thick, but not problematic to dispense - possibly other reviewers were dispensing through a smaller orifice than me - I used the full tube opening without a tip. The product is exceptionally easy to manipulate and smooth out - almost putty like. Unlike other products like silicone and polyurethane, it didn't stick much to my applicator and thus stayed were I wanted it (without sag) and also smoothed out easily. Bottom line is it adhered to all three materials, filled the voids perfectly, looks great, and the leak is no more! I highly, highly recommend this product - it's amazing! ... show more
Reviewed in the United States on April 4, 2026 by CAc4s
    • TAKES 7 DAYS TO CURE
Color: Black Size: 10 fl oz
TAKES 7 DAYS TO CURE Needed to reseal my 12v 100ah lifepo4 battery. My battery design is pretty dumb and they put the handle on the top lid which was only sealed with the bare minimum of a few dabs of some type of similar adhesive on the side that came undone. The only downside to ordering it online was that the nozzle was cracked at the bottom and broken off of the retainer ring but the nozzle was still usable. Ive used the 3m 5200 adhesive sealant before so I already knew what to expect. If you can use caulk gun you can use this..but make sure you dont get it on you or its really hard to get off. Gas will work but it sucks lol. i do wish I had gotten the 3m 5200FC that cures in 24 hours instead though. ... show more
Reviewed in the United States on June 23, 2026 by AstroPhoto
    • All around waterproof adhesive, perfect for exterior applications and boats.
Color: White Size: 10 fl oz
This is the perfect waterproof adhesive for built up marine plywood laminated boat building. I used it on a curved balcony wall and it was stronger than a post and rail assembly. There is a learning curve as it will be stiff in cold weather and a tad soft above 75°. Very strong bond.
Reviewed in the United States on May 20, 2026 by Stephen Ortado
    • Calidad
Color: Black Size: 10 fl oz
Muy bueno
Reviewed in the United States on September 9, 2026 by Dayaniris
    • No Applicator Tip
Color: White Size: 10 fl oz
Great product. Have used before, is completely waterproof and lasts for years. But this time arrived without applicator tip. Asked Rufus about it: "Yes, the 3M Marine Adhesive Sealant 5200 comes with an applicator tip. However, customers report occasional inconsistencies — some have received tubes without tips. If yours arrives without one, applicator tips are widely available at hardware stores or can be purchased separately. The product requires a standard caulking gun for application." Come on ... either I have to buy one at extra cost, return the product and wait a few days for replacement, or use without. Not the best options. ... show more
Reviewed in the United States on May 25, 2026 by Wayne Foran
    • hold down on button for 2 flashes to get it to turn off in 1 minute, 4 flashes for 15 minutes.
Color: Black Size: 3 fl oz
Works great, but there are no instructions in the box. Basically, you hold down the on/off button for 2 flashes to get it to turn off in 1 minute, hold it down for 4 flashes it goes off in 15 minutes. You're welcome!
Reviewed in the United States on August 3, 2026 by Jay
    • Great product
Color: White Size: 10 fl oz
Great stuff.
Reviewed in the United States on August 24, 2026 by Amanda
    • Jon Boat Floor and Seals Great
Color: White Size: 10 fl oz
Works great, appears to keep the leaks out of my jon boat repaired rivets.
Reviewed in the United States on July 23, 2026 by Justin

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