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.

Dynabrade 92116 1/2" W x 12" L 320 Grit A/O DynaCut Belt, 50/pack
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
3M 93623, Steel Mesh Viso V4G-10P 10 ea/Case, 7000103815
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
3M 45715, Cubitron II Hookit Cloth Disc 947A, 40+ X-weight, 5 in x NH, D/F 5HL, Die 500FH, 7100113110
Standard Abrasives 42735, A/O Flap Wheel 661408, 6 in x 1 in x 1 in 120, 7010369146
3M 45710, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 6 in x NH, Die 600Z, 7100113139
3M 65087, Scotch-Brite Diamond Wheel, 3" x 1/2" x 3/8" 645DC, 7100083803
3M 45701, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 3 in x NH, Die 300V, 7100113126
STANDARD ABRASIVES 840030, HOOK AND LOOP DISC PAD, 3 IN X 1/4 IN SHANK, 7010330497
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
Dynabrade 97568 3/8" NPT Female Safety Coupler
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 05444, Stikit Hand File Board, 2-3/4 in x 16 in, 7000045763
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 49054, Polyurethane Sealant 540, White, 310 mL Cartridge, 7000000941, 12/Case 
