Submariner 5513 with "Foggy" Acrylic Lens

[Loyer]

I am now having the case tube replaced on my old 1980's 5513 submariner. My acrylic crystal appears foggy , especially when the sunlight hits it at an angle. I asked the service repair tech if he could clean the fog off the inside of the lens/crystal but he said it was part of the design.

Can someone explain this me ?

[Dr.Smellody]

Pictures �� of the fog would help. I've never had a foggy acrylic crystal. I've had scratched and nicked. I've also had cracked and crazed. Foggy, not so much.

[77T]

Originally Posted by Loyer

My acrylic crystal appears foggy , especially when the sunlight hits it at an angle.

That is a classic symptom of micro-crazed acrylic.

It can happen as UV light degrades the acrylic - the effects predominantly result in a change of the material’s surface layer becoming more brittle. Over time, pressure changes or other factors create micro-cracks that aren’t readily apparent but they diffuse light when viewed at an angle.

My thought is you ought to source a NOS crystal in the near future.

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[Dan S]

Originally Posted by 77T

My thought is you ought to source a NOS crystal in the near future.

Or maybe a TrueDome D19, since NOS crystals are a bit hard to find, and sometimes also fragile.

[Old Expat Beast]

I got a new acrylic service crystal fitted on my 1989 5513 at the RSC a few years ago. Looks pretty similar to the later ones from that era, I think.

[franzumb]

Originally Posted by Loyer

I am now having the case tube replaced on my old 1980's 5513 submariner. My acrylic crystal appears foggy , especially when the sunlight hits it at an angle. I asked the service repair tech if he could clean the fog off the inside of the lens/crystal but he said it was part of the design.

Can someone explain this me ?

I also had this issue with my 1968 meters first. Very foggy. Ended up buying from True Dome and it has been great!


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[Filipão]

Originally Posted by franzumb

I also had this issue with my 1968 meters first. Very foggy. Ended up buying from True Dome and it has been great!

Same here. Unbeatable!

[Filipão]

Originally Posted by Old Expat Beast

I got a new acrylic service crystal fitted on my 1989 5513 at the RSC a few years ago. Looks pretty similar to the later ones from that era, I think.

Similar, but not the same, original T19 (or its replica D19 from TrueDome) produce a lens effect close to the perimeter. And looks to be overall taller, but his I did not measure, so can't be 100% sure.

[Arnozerosix]

Originally Posted by franzumb

I also had this issue with my 1968 meters first. Very foggy. Ended up buying from True Dome and it has been great!


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the true dome are very transparent, but these are no exception to what the OP mentioned.
Although the D19 is also my favorite, all acrylic dome i have been trying had this foggy looking style when exposed to certain sunlight angle...