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 26124, PPS Series 2.0 Type H/O Pressure Cup, Large/Standard (28 floz/22 fl oz, 828m/650 mL), 2/Case
3M 87103, Cloth Belt 341D, 24 X-weight, 9 in x 20 in, Fabri-lok, Single-flex, 7010326200, 20 per case
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle,Straight, 7000031879
3M 77231, Scotch-Brite Roloc Deburr and Finish PRO Unitized Wheel, DP-UR, 2S Fine, TR, 2 in x 1/4 in x NH, 7010365721
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
ACS Diamond Cloth Belt, CX1250 3" X 30" 75U
3M 25125, Scotch-Weld Threadlocker TL71, Red, 1 mL Pipette, 7010330204, 100/case
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 88870, PSA Cloth Disc 777F, 80 YF-weight, 12 in x NH, Die 1200B, 7000120239
Dynabrade 79202 1/2" W x 12" L Belt Assortment Pak
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 16615, Accuspray Atomizing Head, Blue, 1.2 mm, 7100086837 (4 Nozzle/Kit)
Dynabrade 91534 5" Non-Vacuum 400 Grit, Dynacut Extreme Orange Premium Film PSA Disc, 50/pack
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M 34556, Cubitron II Net Sheet Roll, 320+, 80 mm x 10 m, 7100283765, 6 Rolls/Case
3M 05206, Marine Adhesive Sealant 5200, White, 1 oz Tube, 7010325697, 12/Case 
