Silicone Sealants

Stock up on marine silicone sealant and professional-grade solutions from an authorized 3M distributor. Our selection includes 3M Marine Grade Silicone Sealant in clear cartridge and tube formats - ideal for above-the-waterline sealing where UV, moisture, and movement demand a durable, flexible bond. If you’re sourcing marine grade silicone for ongoing maintenance or new builds, case quantities make it easier to standardize materials across crews.

For collision repair and body work, we also carry 3M Dynatron auto seam sealers in 12 oz caulk tubes to help seal seams, joints, and panel gaps for long-lasting protection. Need a specific 3M silicone sealant for your application? Browse related categories like Adhesives and Tapes to complete your jobsite supply list.