Withstands Harsh Marine Environments
Providing a high-quality seal, 3Mâ„¢ Marine Grade Silicone Sealant is a one-component cure, silicone sealant engineered to withstand the harsh marine environment. This weather-resistant sealant is formulated to resist mildew and form a non-yellowing seal for above waterline applications. In addition, this marine sealant is high-temperature resistant and remains flexible even after years of exposure. The non-shrinking and non-sagging properties of this product offer simple and efficient application. This marine-grade sealant adheres to bare and painted metal, fiberglass, glass, non-oily woods, plastics and abraded rubbers.
Recommended Applications
- Electrical hatch sealing
- Dashboard components
- Port lights
- Above the waterline interior/exterior sealing
Designed to Endure Marine Environments
3Mâ„¢ Marine Grade Silicone Sealant is a part of a broad range of adhesive sealants uniquely formulated for the marine market. 3Mâ„¢ Marine Grade Silicone Sealant is designed for reliable sealing performance in harsh marine environments.
Understanding Adhesive Sealants
Adhesive sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges.
Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Insize MLP-HCM102, AUTOMATIC TUTTING MACHINE (ADVANCED TYPE), 100mm, 6974029771613
Dynabrade 51811 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 1000,000 RPM, 1/16" Collet
3M 28848, Unitized Wheel Mandrel 28848, 1-5/8 in x 1/4 in x 3/4 in x 1/4 in, 7100082547
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
Standard Abrasives 811027, Type 27 Cleaning Disc, 4-1/2 in x 1/2 in x 7/8 in, 7000046837
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
3M 20942, Scotch-Weld Urethane Adhesive 3549, Brown, Part A, 5 Gallon Drum, (Pail), 7100041738
Dynabrade 18570 Vane Set (4pk)
Dynabrade RB1 8" Right Angle Buffer/Polisher
3M 07056, Drywall Sanding Sponge CP-042, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101555
3M 03716, Scotch-Brite Cut and Polish Unitized Wheel, CP-UW, 7A Coarse, 2 in x 1/4 in x 1/4 in, 7100063702
Dynabrade DN1 - 1-1/4" Pistol Grip Mini Orbital Denibber, 8,500 RPM, 1/8" Orbit, Rear Exhaust, For Thread Type Pad
3M 13743, Scotch-Brite EXL Unitized Wheel, XL-UW, 2S Fine, 6 in x 1 in x 1 in, 7000028479
Standard Abrasives 880515, Buff and Blend GP Wheel, 3 in x 2 Ply x 1/4 in A VFN, 7100095203
3M 40776, Scotch-Weld Epoxy Potting Compound DP270, Clear, 200 mL Duo-Pak, 7100228179, 12/Case 
