servicing a 16600

[Z_Z]

I'm planning on servicing my Sea Dweller, 16600, M series from 2008 for the first time.

I'm going to get it serviced with a Rolex trained, independent watch maker. However, he only has the caseback gasket and only one gasket for the crown. He will also be unable to service the Helium escape valve.


In light of the above, I have the following questions:

1. Where could I source the gaskets from, apart from Rolex dealerships?

2. Can I get away with just changing the two gaskets and still have a waterproof case?

3. Does the HEV have to be serviced?

4. Finally, things to look out for and instruct the watchmaker for the service.

Thanks.