Rebedding mast base wiring fittings

[MJWB]

Noticed water coming in at base of the mast. I suspect the bedding on one or more of the wiring plugs/sockets has failed and so these fittings need rebedding. Might as well do the lot as I suspect they haven't been touched in the boat's life.
Please can anyone advise on what UK product to use for this rebedding? Butyl tape? Some flexible product which comes in a tube?
Many thanks.

 

[PaulRainbow]

Noticed water coming in at base of the mast. I suspect the bedding on one or more of the wiring plugs/sockets has failed and so these fittings need rebedding. Might as well do the lot as I suspect they haven't been touched in the boat's life.
Please can anyone advise on what UK product to use for this rebedding? Butyl tape? Some flexible product which comes in a tube?
Many thanks.

CT1 or OB1 (same thing, different trade names).

 

[PetiteFleur]

I've used Butyl tape on all deck fittings etc. Add a small stainless washer between fitting & deck so not to squeeze out all the Butyl.