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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
  • 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
  • Tensile strength: 220psi
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Mildew-Resisant Silicone Caulk - White, 3oz. 190266 08017
In stock online.

$14.99

Mildew-Resisant Silicone Caulk - Clear, 3oz. 190241 08019
In stock online.

$14.99

Mildew-Resisant Silicone Caulk - White, 10oz. 190280 08027
In stock online.

$22.99

Mildew-Resisant Silicone Caulk - Clear, 10oz. 190233 08029
In stock online.

$22.99

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
  • 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
  • Tensile strength: 220psi

Specs

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REVIEW SNAPSHOT®

by PowerReviews
3MMarine Grade Silicone Sealant
 
4.2

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Weather proof (6)
  • Protects well (5)
  • Easy to use (4)

Cons

No Cons

Best Uses

  • Outdoors (3)
    • Reviewer Profile:
    • Casual/ recreational (4)
    • Was this a gift?:
    • No (5)

Reviewed by 6 customers

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Displaying reviews 1-6

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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 1-6

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