The T6 Aluminum plate is powder coated and mounted to the jon boat transom. The plate is bolted through the transom and sealed with 3M M5200. We now sealed all the bolts that go through the transom with 4200. Some of these bolts are below the water line, but most of them are above the water line. I used 3M 4200 just in case I needed to remove the bolts again. If I used the 3M 5200 on the bolts, people said I would bend or tear the aluminum before I would be able to get the bolt out. So 5200 is permanent, and 4200 is strong, but not as permanent = semi removable.
Bolts used - Stainless, 3/8", 2.5" long
Washers - Flat Stainless 3/8" Fender Washer
Lock Nut - Stainless 3/8"
3M Marine 4200 - I treat it like 5200 but use it for applications where I may need to remove that item. 4200 is still very strong and seals great, but its removable.
Fast Cure 4200 - amzn.to/2sRrXiO
3M Marine 5200 Types for permanent seals below the water line
Regular Permanent - amzn.to/2HMqbF2 _ 7 day cure
Fast Cure Permanent - amzn.to/2HPzwMi _ 2 day cure
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Негізгі бет Jon Boat Transom Fix: 3M Marine 4200 Quick Cure 3of3
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