3M Marine Sealant Selection Guide

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  X= Good XX= Best choice
  3M 3200 3M 4000UV 3M 4200FC 3M 4400 BC 3M 5200 3M 5200FC 3M 5210 3M Scotch Weld bonding adhesive 5400 FC 3M Marine Deck Caulking 5600
Sealing Yes Yes Yes Yes Yes Yes Yes Yes Yes
Bonding No Good Good Good Excellent Excellent Excellent Excellent Excellent
Removable Yes Yes Yes Yes No No No No No
Above Water Yes Yes Yes Yes Yes Yes Yes Yes Yes
Below Water No Yes Yes Yes Yes Yes Yes No Yes
Strength Low Medium Medium Medium High High High High High
Chemical base Silicone Polyurethane Polyurethane Polyurethane Polyurethane Polyurethane Hybrid Polyurethane Hybrid
Curing time 24 Hours 24 Hours 24 Hours 48 Hours 7 Days 24 Hours 48 Hours 24 Hours 24 Hours
Tack free time 30 to 80 Minutes 1 to 2 Hours > 1 Hour 4 Hours 48 Hours 2 Hours 5 Hours 25-40 Minutes 10-20 Minutes
Deck to hull bonding         X XX   X  
Sealing below and above waterline     X X X XX   X  
General purpose sealing and bonding above and below waterline     X X X XX      
Bedding       XX   XX X    
Keel bonding         X XX X    
General interior sealing X X         XX    
Sealing wood to deck or superstructure                 XX
Sanitair sealing XX X              
Glass window bonding               XX  
Fritted glass window bonding               XX  
Plastic (PMMA) window bonding               XX  
Wood deck caulking                 XX
Bonding anti-slip plates in engine rooms     X X X X      
Sealing exterior strong UV radiation zones X XX              
Bonding decorative panels (vertical)     X X          
Bonding work surfaces (horizontal)     X X X X X    
Bonding deck hardware (deck/fittings)   X X X          
Bonding thru hull   X X X X X      
Bonding fibreglass to fibreglass     X X          
Bonding hatches and portlights   X XX XX          
Bonding wood to wood     X X X X X