cockpit drain

[mike]

While docked this summer I'd occasionally notice significant amounts of water in my big port side cockpit lazarette. I saw water trickle streaks coming in around the cockpit drain thru hull so I'm now rebedding it on the trailer. After removing the thru hull I noticed the wooden core of the transom was quite wet. I cleaned everything and rebedded the fitting with silicon sealant. Then I noticed the silicon tube said "not for total immersion" Hmmmmmm........now I'm thinking I should have used another sealant material. I'll probably rebed the bottom rudder pintle as well since I see the telltale trickle signs there too.Any thoughts about a rebedding material?

 

[chris]

3M 4200

I would recommend using 3M 4200-- for use above or below waterline and will even cure while in contact with water. It is mechanically remvable in the future, unlike the much stronger 5200, which is, for the most part, permanent. Be sure to read the label completely before use, this is a serious product you should understand completely before application. Look in the archives under "4200" and i am shure a lot of posts will come up. You can also go to the 3M website and read a material safety data sheet on the product. By the way, 4200 was originally developed to seal bullet holes in airplane fuel tanks...fair windschris

 

[Jake19851]

4200 and 5200 differences

Also note that 5200 is not designed to work well with plastics. It works beautifully between metal, fiberglass, gelcoat surfaces however. 4200 is designed to adhere well to plastics and all the aforementioned materials and is also much less permenant.