Withstands Harsh Marine Environments
Providing a high-quality seal, 3M™ 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
3M™ Marine Grade Silicone Sealant is a part of a broad range of adhesive sealants uniquely formulated for the marine market. 3M™ 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.

3M 41531, Scotch-Weld Epoxy Adhesive 420, Black, Part B, 5 Gallon Drum (Pail), 7000000827
3M 35519, Rubber Sanding Block, 2-3/4 in x 5 in, 7000126109
3M 20230, Scotch-Seal Metal Sealant 2084, Silver, 5 Gallon Drum (Pail), 7000046344
3M 05783, Hookit Pad D/F, 8 in x 5 bolt hole, 7000119884
ACS Diamond Cloth Belt, CX1250 3" X 90" 20U
3M 45710, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 6 in x NH, Die 600Z, 7100113139
3M 05744, Hookit Hand File Board, 2-3/4 in x 16 in, 7000045717
3M 69602, Cloth Belt 777F, 60 YF-weight, 1 in x 11 in, Sine-lok, Full-flex, 7010295223, 500 per case
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
3M 20365, Scotch-Weld Epoxy Adhesive 2216, Gray, Part A, 5 Gallon Drum (Pail), 7000046361
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 62817, Adhesive Sealant 760 UV, Black, 290 mL Cartridge, 7100139449, 12/Case
3M 21463, Marine Adhesive Sealant 5200, White, 5 Gallon Drum (Pail), 7010325698
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 82462 5" Dia. x 400 Grit A/O PSA Filmbac DynaCut Disc, 100/Box
3M 05049, Cloth Belt 384F, 80+ XF-weight, 1 in x 30 in, Fabri-lok, Full-flex, 7100141431, 200 per case
3M 05220, Marine Adhesive Sealant 5200FC Fast Cure, White, 3 oz Tube, 7000120490, 6/Case 
