Jump to content
When you buy through links on our site, we may earn an affiliate commission.
  • Current Donation Goals

Help: UPO waterproofing (sealing crown?)


Mikey2008

Recommended Posts

Hi Guys,

I'm going to waterproof my UPO whilst I have it decased. I know how to seal the following:

1) epoxy the HEV value

2) glue sapphire crystal

3) silicon grease the caseback o-ring

How does one go about sealing the Crown? there doesn't seem to be a gasket in the crown-tube and there's nothing inside the crown. Do I just apply some silicon grease on the threading and let friction do its thing?

I'd appreciate the advice from people that have waterproof their watches.

thx

Link to comment
Share on other sites

  • 2 weeks later...

Guys, some pics of my UPO (partially completed). I destroyed the crystal tension ring and have ordered a few from CousinsUK. Item will be with me in 2 weeks as its on back order.

*The crystal loose and bezel will be glued after i press the crystal.

DSCN7978.JPG

DSCN7973.JPG

DSCN7950.JPG

DSCN7951.JPG

Link to comment
Share on other sites

Wimpie, I'm going to get myself a 'narikaa po' when he next has them in stock and will do a orange bezel version using black zinc. The guy that does the coating tells me black zinc is pretty durable. I guess it will be like a PVD finish but at 1/3 of the cost.

Link to comment
Share on other sites

Most PO have 1 seal in the crown and 1 in the tube. You can clearly see the rubber o-ring. If you can't see them they ain't there :lol:. You don't glue the crystal but solely use the tension ring. Know that not the grease makes a watch water proof but the margins and tolerances of the different parts fitted together. Better have it checked for leaks before letting it come in contact with water.

Link to comment
Share on other sites

got the Gen tension rings' from cousinsuk. *pic attached so you get a better understanding of the product. Its pretty rigid.

crystal is pressed down and the ring will keep it in place and keep moisture out.

I tried glue and it doesn't work. May aswell do it properly!!

ring.jpg

Edited by Mikey2008
Link to comment
Share on other sites

  • 2 months later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...
Please Sign In or Sign Up