duco cement?

[jeff-register]

I have been digging in my Scott service manual. In a 1954 lower unit page it states to use Duco Cement under the impeller housing to place it to stay. IF I MAY ask what Duco Cement is please? 😯

[wedgie]

Here’s some Jeff.

http://www.amazon.com/Duco-Cement-Multi … B0000A605H

Never heard of it before today.

[jeff-register]

Wedgie,
Last housing I removed to replace D-shaft seals it was glued in with the light brown omc gasket sealer. Had to heat it up to get it out.
thanks for the look up!!

[legendre]

Duco Cement is one of those oldschool solvent-based adhesives along the lines of Seal-All, Resistol and so on. If I recall, Duco has a yellowish color, and is somewhat flexible and ‘gummy’ even when fully cured. I believe Duco is more in the contact adhesive class than Seal-All.

Seal-All dries crystal clear and hard, and I know that it’s highly resistant to gas, oil, alcohol and so on. It can be used to seal up leaking fuel tanks, without having to drain the tank – you just have to work in steps, use a few layers of it.

[chris-p]

If you have 3M847, use that. I seal all my impeller plates with it.

[phil-b]

I wouldn’t call Duco a contact adhesive… It starts clear (but can yellow), and thins with acetone. It’s still my "go to" glue for ceramics — you need to apply a layer to porous surfaces and let it dry.

My neighbor, who does museum quality conservation work approves of it: it’s completely reversible (since it disolves in acetone).

[jeff-register]

Phil,
Why would a boat motor service manual show to use it to glue the impeller housing on to the lower unit? I do show a o-ring below the housing & the shaft seal below. Will it act like gasket sealer as well?

[Author]

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