RE: Advice on Leaky front hatch on P19?

Eric Johnson (
Mon, 1 Feb 1999 13:58:23 -0800

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West Wight Potter Website at URL
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> Having finished "gook n' puttying" the bow pulpit, I'm redy to tackly the
> front hatch.
> The front hatch on oour P19 doesn't fit very well. I want to
> install a gasket
> around the top edge of the hull opening to prevent water
> splashing up in there
> when we take a wave over the bow. I have looked at all the
> gasket material at
> the hardware stores and at the automotive stores and have one
> that might work.
> Has anyone done this successfully and what type of gasket did you use?

I had a friend who is a material scientist at 3M help me out on this one.
We calculated the modulus of elasticity necessary to ensure a tight seal
along with the thicknes of the material that would be necessary without
causing difficulty in opening the front hatch. Porosity was also a concern,
as well as sensitivity to UV. We had a couple candidates for materials to
use but none were ideal in all conditions. Finally we tossed out the UV
requirement since the hatch would be covered over most of the time.

So after intense deliberations, we decided a cylindrical extrusion of a soft
vulcanised rubber could be made to meet these requirements.

Unfortunately,we couldn't get the R&D lab manager to give us time on the
automated equipment because they didn't think potter P19 hatch seals were a
big enough market ...

So I spend about $2 on a length of rubber vaccuum hose at an auto parts
store, slit one side, and installed it around the hatch opening. It works
pretty well :)

Sorry, I couldn't resist. Its winter :) The vaccuum hose part is true. :) I
honestly haven't take a huge wave over the bow since i installed it, but it
looks nice.