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3M
Marine Grade Silicone Sealant

Remains flexible and is mildew resistant

For sealing Lexan®, Plexiglass®™, gelcoat, fiberglass, wood, glass, metal, rubber, and vinyl. Cured sealant remains flexible and is mildew resistant.

  • Formulation: One-part silicone sealant
  • Recommended Usage: Lexan®, Plexiglass®™, gelcoat, fiberglass, glass, wood, metal, rubber, and vinyl
  • Material Incompatibilities: None, compatible with acrylics; not as strong as polyurethane
  • Cure Time: Tack free: 1 hr; complete cure: 24 hrs
  • Cleanup: Soap and water
  • Removal: Mechanical removal
  • Tensile strength: 220psi
  • 10oz.
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Marine Grade Silicone Sealant, White, 10oz. 190280 08027
In stock online.

$23.99

Add to My List
Marine Grade Silicone Sealant, Clear, 10oz. 190233 08029
In stock online.

$23.99

Add to My List

Product Description

Remains flexible and is mildew resistant

For sealing Lexan®, Plexiglass®™, gelcoat, fiberglass, wood, glass, metal, rubber, and vinyl. Cured sealant remains flexible and is mildew resistant.

  • Formulation: One-part silicone sealant
  • Recommended Usage: Lexan®, Plexiglass®™, gelcoat, fiberglass, glass, wood, metal, rubber, and vinyl
  • Material Incompatibilities: None, compatible with acrylics; not as strong as polyurethane
  • Cure Time: Tack free: 1 hr; complete cure: 24 hrs
  • Cleanup: Soap and water
  • Removal: Mechanical removal
  • Tensile strength: 220psi
  • 10oz.

Specs

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REVIEW SNAPSHOT®

by PowerReviews
3MMarine Grade Silicone Sealant
 
4.5

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Weather proof (8)
  • Protects well (7)
  • Easy to use (6)
  • Visually pleasing (3)

Cons

No Cons

Best Uses

  • Outdoors (5)
  • Quick fix (3)
    • Reviewer Profile:
    • Casual/ recreational (7)
    • Was this a gift?:
    • No (8)

Most Liked Positive Review

 

Excellent product

This is easy to work with and works as expected.
Great for bedding windows and hatches.

This is easy to work with and works as expected.
Great for bedding windows and hatches.

VS

Most Liked Negative Review

 

Ok caulking

Sets up to fast hard to keep that line smooth.

Sets up to fast hard to keep that line smooth.

Reviewed by 10 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
5.0

Great Product

By Randal

from Harrison Township, Michigan

About Me Casual/ Recreational

Verified Buyer

Pros

  • Easy to Use
  • Protects Well
  • Visually Pleasing
  • Weather Proof

Cons

    Best Uses

    • Indoor
    • Outdoor

    Comments about Marine Grade Silicone Sealant:

    I used it outside replacing old mildewed caulking.

    • Was this a gift?:
    • No
     
    5.0

    It works well

    By Fritz

    from Portland, OR

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Easy to Use
    • Protects Well
    • Weather Proof

    Cons

      Best Uses

      • Outdoor
      • Quick Fix

      Comments about Marine Grade Silicone Sealant:

      This product does exactly what it's supposed to do. In short, it works very well.

      • Was this a gift?:
      • No
       
      5.0

      Great Stuff

      By Thomas

      from Trinidad and Tobago

      Comments about 3M Marine Grade Silicone Sealant:

      I am never disappointed with this product, this sealant is the best I have ever work with.

       
      5.0

      This product is under rated.

      By acpat

      from Tampa, Fla.

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • strong adheasive

      Cons

      • Difficult to Use

      Best Uses

      • rubber to gelcoat

      Comments about Marine Grade Silicone Sealant:

      This stuff is the bomb!! i had a issue where the keel gaurd was not sticking is two spots, the worst was along the mid point of the keel where the gaurd had a 1 foot section that was coming off the hull on one side, after preping the area and drying with denatured alc. using a wet/dry vac-cleaner to insure no residue, i filled the gap from the bottom and sqeesed the sealant to the top and wiped off the excess, used the straps to secure a brace against the repair an d after 48 hours it's perfict.

      • Was this a gift?:
      • No
       
      4.0

      Good product.

      By John

      from Chesapeake, VA

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy to Use
      • Protects Well
      • Visually Pleasing
      • Weather Proof

      Cons

      • Messy

      Best Uses

      • Outdoor

      Comments about Marine Grade Silicone Sealant:

      Use it on my boat. Got the job done.

      Service and delivery comments:

      Good service.

      • Was this a gift?:
      • No
       
      5.0

      Sealing deckport

      By early riser

      from Narragansett

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Protects Well
      • Weather Proof

      Cons

        Best Uses

        • Quick Fix

        Comments about Marine Grade Silicone Sealant:

        Rain water was seeping into the boat's bilge through the rear deck port. The pliable silicon sealant solved the problem.

        • Was this a gift?:
        • No
         
        4.0

        Used to seal leaking portholes

        By Salty

        from Cape cod

        About Me Advanced

        Verified Buyer

        Pros

        • Easy to Use
        • Visually Pleasing
        • Weather Proof

        Cons

        • Messy

        Best Uses

        • Quick Fix

        Comments about Marine Grade Silicone Sealant:

        Did the job

        • Was this a gift?:
        • No
         
        2.0

        Ok caulking

        By Matt

        from Largo

        Verified Buyer

        Pros

        • Protects Well
        • Weather Proof

        Cons

        • Difficult to Use

        Best Uses

          Comments about Marine Grade Silicone Sealant:

          Sets up to fast hard to keep that line smooth.

          • Was this a gift?:
          • No
           
          5.0

          Great product for your sealing needs!

          By Mark the sunburnt one

          from Broken Arrow, OK

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Easy to Apply
          • Easy to Use
          • Protects Well
          • Weather Proof

          Cons

          • No Way To Break Tube Seal

          Best Uses

          • Boat Hardware
          • Indoor
          • Outdoor

          Comments about Marine Grade Silicone Sealant:

          Product works well. Skins over in 15 minutes. Most sealant tubes have a cap that you use to break the sealant tube seal. This one does not so, make sure you have something small and sharp in order to break the aluminum seal under the cap. I used this sealant when I mounted a table pedestal base to my boat. It worked well.

          • Was this a gift?:
          • No

          (3 of 3 customers found this review helpful)

           
          5.0

          Excellent product

          By Ruger Rooter

          from Ionia, MI

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Easy to Use
          • Protects Well
          • Weather Proof

          Cons

            Best Uses

            • Outdoor

            Comments about Marine Grade Silicone Sealant:

            This is easy to work with and works as expected.
            Great for bedding windows and hatches.

            Service and delivery comments:

            Ordered on line and I received it right away.

            Displaying reviews 1-10

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