Transom drain tubes

[gradywhiteman]

Going to replace my transom drains soon,just looking for some advice on sealing them. Should I use o-rings or some type of sealant? I also plan to use a flaring tool. When measuring for the length of the tubes how much should I allow for the flare?

 

[NOTHING ELSE MATTERS]

I sealed mine with 4200. As far as the length, i made mine 3/16 longer. One side was done allready. 1/8 is usually O.K for the length, but i wanted to have more sealant there, that is why i made mine a little longer.
Oh, i used a home made tool, two truck wheel nuts, washers and a threaded rod. Works like a charm.

 

[gradywhiteman]

Thanks for your reply, Who makes 4200 and would West Marine have it?

 

[NOTHING ELSE MATTERS]

4200 is a sealnt non permanent as oppose to 5200 which is permanent. All marine supply houses have them, including WM.

 

[Strikezone]

4200 & 5200 are both 3M products. They're also available at outlets other than West Marine....probably at a better price.

 

[gradywhiteman]

Thanks again for responding. I will buy the caulk and give it a shot.