Sestrel Compass, what model?

[Alicatt]

Thanks, the compass is in a sleave, no screws or such on it just 4 adjustment magnets on the bottom. With the seal leaking it pours out fluid if you slightly tip it over... guess how I know...
Not sure what the fluid is in it, not as heavy/thick as baby oil, and could be paraffin, it is slightly oily, thicker than water but not by much, could be mineral spirits

Edit: the older Ocean 37's had Sestrel Moore heavy duty compasses but this is not that.

 

[Poignard]

There used to be a nautical instrument repairer by Hull docks.

I don't know if he is still there but maybe someone here will know.

If so, you might get a new gasket there.

 

[Jodel]

Thanks, the compass is in a sleave, no screws or such on it just 4 adjustment magnets on the bottom. With the seal leaking it pours out fluid if you slightly tip it over... guess how I know...
Not sure what the fluid is in it, not as heavy/thick as baby oil, and could be paraffin, it is slightly oily, thicker than water but not by much, could be mineral spirits

Edit: the older Ocean 37's had Sestrel Moore heavy duty compasses but this is not that.

Compass fluid is available from Light Aero Spares in Devon. Being "Aero" it is not cheap. Compass Fluid Bayol 35 (C-Fluid) LAS Aerospace Ltd