3M Marine Silicone Rubber sealant
3M 3M Logo
  • 3M Marine Silicone Rubber sealant

3M Marine Grade Silicone Sealant

3M Marine Grade Silicone Sealant is a mildew resistant, non sagging, moisture curing silicone rubber adhesive sealant for above-waterline applications. Designed specifically for durability in the harsh marine environment, it provides non-yellowing seals that remain flexible even after years of exposure.

It adheres to and bonds bare and painted metal, glass, gelcoat, Lexan, Plexiglass, fiberglass, non-oily woods, abraded rubber, vinyl, and many plastics. Cures tack free in one hour, with full cure in 24 hrs. Use soap and water for cleanup.

Note: Silicone sealants are generally not as strong as polyurethanes. While it does have 220 psi tensile strength, evaluate project bonding and flexibility requirements beforehand.

$12.80 / ea
 The item was added to your wishlist.
 The item was added to your shop cart.
Tech Spec Product Info User Generated Content


  • Mildew resistant
  • Flexible Polymer
  • One-part Cure
  • Excellent weathering resistance
  • High temperature resistant
  • Non-shrinking
  • Non-sagging formula


Below Water Line (yes/no): No
Material: Silicone
Rate Of Cure: Fast
Strength: Fair
Type: Adhesive Sealant
Usage: Sealing
5.0 1

Yes I would buy 3M silicone again


Your web site is easy to use & I received the products in a short time


Bay shore, NY


3M Marine Grade Silicone Sealant



Related Items:
TotalBoat Blogs Live Tech Support