[Public-List] Exhaust iron/steel pipe thread sealant

[Jonathan Bresler]

Dear Albergers,

One of the projects this winter is replacing the stuffing in the stuffing
box.  To improve access to the stuffing box, I removed the waterlift
muffler, a Vetus item, located below the cockpit sole above the stuffing
box.  In doing so, the heavy duty exhaust hose did  not come off the
iron/steel threaded pipe segment but rather the pipe unscrewed from the
rest of the exhaust.

Found that the connection was sealed with a red, rubbery material.  Don't
believe that I've ever seen such before.   A photo of the material is at
https://drive.google.com/file/d/14F3F-42SbZWMayvyOYYkEgyuMRi2QX-o/view?usp=sharing

Does anyone know what the material is?  What should I use to seal the
threaded pipe fitting during reassembly?

Thank you,
Jonathan
-- 
Jonathan M Bresler
S/V Constance Alberg 30 #262
Annapolis/Eastport MD