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Help: UPO waterproofing (sealing crown?)


Mikey2008

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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

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  • 2 weeks later...

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.

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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
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  • 2 months later...

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