Rolex Genuine & Rare Sea-Dweller 1665 watch Part Helium Escape Valve 244 24-V50 Factory Sealed

Rare & highly important Rolex part from Rolex Sea-Dweller #1665.

Without this part, Rolex collectable Great white "1665 watch won't be waterproof.

What is An escape helium valve ? what is its work ?

It can evacuate the helium atoms that could seep inside the case of the watch at certain very specific prolonged dives, dives so-called "saturation" where divers breathe a gas mixture of helium and oxygen, avoiding certain adverse effects of nitrogen at high pressure, and allowing them to stay several days inside a bell or an underwater station.

Or during the ascent, decompression divers can be faster than the degassing helium content in the watch, which causes a pressure in the housing, which may cause damage.

This one is New & sealed Rolex factory package.

Ready to fits on your Rolex watch.

Fits on Rolex Sea-Dweller watch from 60-70's references :

1665, 1665 DRSD, 1665 Comex

Highly & important collectible spare.

Perfect for repair, service or restore your Rolex 1665 watch.

DON'T MISS IT !!

  GUARANTEED 1OO% AUTHENTIC