Search  for anything...
3M

3M Marine Adhesive Sealant 5200 (05203) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 3 fl oz Tube

  • Based on 8,874 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Jan 21
Order within 5 hours and 8 minutes
Available payment plans shown during checkout

Color: White


Size: 3 fl oz


Pattern Name: Adhesive Sealant


Features

  • USE WHAT THE PROS USE Extremely strong adhesive sealant retains strength above or below waterline
  • BONDS PERMANENTLY Ideal for sealing, bonding and attaching on the interiors of boats and RVs, or on exteriors below the waterline and where shielded from the sun
  • LONG LASTING FORMULA Tough polyurethane polymer resists weathering and salt water
  • WONT CRACK OR PEEL Stays flexible, retaining strong bonds even during vibration, structural movement or shock
  • EASY TO APPLY Adhesive sealant requires no mixing, cures completely in 5-7 days
  • For industrial/occupational use only. Not for consumer sale or use

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.

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2 x 5 x 9 inches; 4.94 ounces


Item model number ‏ : ‎ 5203


Department ‏ : ‎ unisex-adult


National Stock Number ‏ : ‎ 8030-01-549-4478


Date First Available ‏ : ‎ June 15, 2006


Manufacturer ‏ : ‎ 3M


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #2,309 in Automotive (See Top 100 in Automotive) #70 in Body Repair & Restoration Adhesives


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jan 21

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Expensive but did the job on my pool
Color: White Size: 10 fl oz Pattern Name: Adhesive Sealant
I used this to seal under the stone around the periphery of my pool, and it worked great for that purpose. I liked that it was also sealed on the non tip end to prevent premature drying of the tube.
Reviewed in the United States on January 6, 2025 by braxtonw

  • Good product
Color: Tan Size: 10 fl oz Pattern Name: Adhesive Sealant
Good product
Reviewed in the United States on December 31, 2024 by Jeff Augustin

  • The best you can buy.
Color: Black Size: 10 fl oz Pattern Name: Adhesive Sealant
I use this stuff to apply a rubber base onto wooden instruments. Bonding to rubber is not very easy, but this stuff is great. It is extremely tacky and firm right out of the tube. I keep mine in the fridge to preserve the unused contents, but can also go in the freezer, and is immediately usable even icy cold. CONS: it takes several days to cure hard (for shaping and sanding) but will skin in 1-2 days. Seriously tacky! There is a fast cure variety but it’s only available in white. I need the black stuff. JB wood also has a similar white product. This is seriously on another level. ... show more
Reviewed in the United States on July 8, 2024 by Djembe Drum

  • The absolute best adhesive/sealant on the market !
Color: Black Size: 10 fl oz Pattern Name: Adhesive Sealant
Very good sealant / 1 problem plastic nozzle was missing .? Would have been 5 stars ⭐️ if nozzle was included.
Reviewed in the United States on October 15, 2024 by Thomas Cooner

  • Black 5200
Color: Black Size: 3 fl oz Pattern Name: Adhesive Sealant
Use this on many things but this was used to repair hunting shoes that came apart. It is holding up a lot better than anything else we have used. We may be able to get another season out of them.
Reviewed in the United States on October 22, 2024 by hilo808

  • It's the same 5200 but at a better price.
Color: White Size: 10 fl oz Pattern Name: Adhesive Sealant
It's the same product at a lower price and delivered to my home.
Reviewed in the United States on November 14, 2024 by Amazon Customer

  • Works well
Color: Black Size: 10 fl oz Pattern Name: Adhesive Sealant
Worked exactly as I needed it to work on sealing my spokes on my wheel.
Reviewed in the United States on November 17, 2024 by jroadstar jroadstar

  • All I use on boats!
Color: White Size: 10 fl oz Pattern Name: Adhesive Sealant
Best sealant for marine use, keeps water out!
Reviewed in the United States on December 16, 2024 by lou

Can't find a product?

Find it on Amazon first, then paste the link below.