3M 3000UV Marine Adhesive Sealant
3M 3M
  • 3M 3000UV Marine Adhesive Sealant

3M 3000 UV Marine Adhesive Sealant

3M 3000 UV is a one-part, moisture-curing elastomeric marine sealant with exceptional UV resistance. Use it on portholes, deck hardware, trim, and other cosmetic seams for a strong, water-resistant seal that won't fade or peel. Its ideal for sealing dissimilar materials, including polyester, wood, aluminum, concrete, glass, stone, ceramic, and most lacquered metals. Low-VOC formula cures without isocyanates, so it's less toxic for you and your work environment. Use above or below the waterline.

Available in a 10 oz. cartridge. 3000UV is available in Black or White.

$14.88 / tb
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Tech Spec Product Info User Generated Content


  • Easy-to-use, single-component cartridge that fits a standard caulk gun (sold separately).
  • Superior UV resistance ensures product will not fade or degrade with extended UV exposure so it's ideal for cosmetic sealing projects.
  • Fast 50-minute skin time still provides ample working time.
  • Low-VOC formula contains no isocyanates so it is less toxic for you—and your work environment.
  • Multiple uses from a single cartridge because it seals many different types of materials, such as wood, polyester, glass, aluminum, and many more.
  • Can be painted when wet to improve its appearance.
  • Versatile sealant produces a removable bond on wood and fiberglass.
  • Permanent elasticity produces durable, long-lasting bonds.
  • Excellent resistance to water and salt spray.
  • Can be used above or below the waterline.


Item Number  Color  Size 
MMM-076308-98241  White  10 oz. (290 ml) 
MMM-076308-98242  Black  10 oz. (290 ml) 
Number of Components  One 
Material  Silane Modified Polymer (SMP) 
Sealant Consistency  Medium paste 
Tack-Free Time  40-60 minutes @ 73°F; 50% relative humidity 
Cure Rate  >1/8 inch (3.5mm) per 24 hours 
Application Temperature  40°F to 95°F 
Service Temperature  -40°F to 194°F 
VOC Content  22 g/L 
Comaptibility with Paints  Can be painted when wet with water-based paints. Test solvent-based paints before using. 
Resistance to Dilute Acids and Bases  Good 
Approximate Coverage  A 1/8 inch (3mm) bead yields 126 lineal feet (38 lineal meters)  
Tensile Strength  145 psi 
Elongation Break  >300% 
Hardness, Shore A  30 
Below Water Line (yes/no): Yes
Material: Silane Modified Polymer
Number Of Parts: One Part
Strength: Strong
Type: Adhesive Sealant
Usage: Sealing
3.0 2

Would not buy again


I was interested in a black sealant for a built in cooler on my boat. 5200 would not have made sense as at some point it may need to be removed/replaced and there was no need for a permanent seal. I opted for this over 4000UV and made the wrong decision. The product was soft, flaked away easily and if touched at all with acetone, smeared and made a huge mess. I ended up scraping this away and redoing it with 4000UV, which I would highly recommend for a non-permanent use.


Bradenton, FL


Works excellent for what it is designed for.


Sun resistant sealing sun roof for RV, stays pliable and can be removed if needed. Used in place of lesser quality elastomeric. Sealed up a couple of thru hull mounts on my sail boat as well. Stuff is awesome and can be removed. Used to cover over 3M 5200 as well with very good results.


Western Nevada


3M 3000 UV Marine Adhesive Sealant



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