Case Back Seal
Discussion
Just replaced the batteries and case back seals on a couple of old timers:
A question for the guru's though. The Traser caseback is held on with four screws. Is there any need to grease the seal on this kind of caseback? Or indeed, will it be to the detriment of waterproofing by putting grease on it? They are both old watches and I don't intend swimming with them.
By the way, the mucky screw heads were done by the previous owner. Honest!
A question for the guru's though. The Traser caseback is held on with four screws. Is there any need to grease the seal on this kind of caseback? Or indeed, will it be to the detriment of waterproofing by putting grease on it? They are both old watches and I don't intend swimming with them.
By the way, the mucky screw heads were done by the previous owner. Honest!
Edited by Fallingup on Friday 19th October 21:30
Personally, I would still lubricate the o-ring with a very light coating of silicone, yes.
Though a screwed case back like that is compressive only and means no shearing/stretching of the o-ring (unlike one that screws down via rotation of the entire case back), silicone will still help create a better water-tight seal and prolong the life & efficacy of the o-ring by slowing cracking & stiffening of the rubber.
Though a screwed case back like that is compressive only and means no shearing/stretching of the o-ring (unlike one that screws down via rotation of the entire case back), silicone will still help create a better water-tight seal and prolong the life & efficacy of the o-ring by slowing cracking & stiffening of the rubber.
yes, as above.
It is essential that any oring, regardless of case back fitting, is coated with Fomblin, or another suitable alternative.
I use Fomblin on every oring. Case Back, Case Front, Pushers, Crown.
Even if you arent planning on going near water, without the lubrication to the seals, then there is a possibility of moisture getting in regardless.
Especially at this time of year! I've already had 3 customers send me watches that have "steamed up" while they were just wearing it for work.
The ambient temperature versus the minus temps we have already started getting, is a nightmare for watchmakers, lol.
It is essential that any oring, regardless of case back fitting, is coated with Fomblin, or another suitable alternative.
I use Fomblin on every oring. Case Back, Case Front, Pushers, Crown.
Even if you arent planning on going near water, without the lubrication to the seals, then there is a possibility of moisture getting in regardless.
Especially at this time of year! I've already had 3 customers send me watches that have "steamed up" while they were just wearing it for work.
The ambient temperature versus the minus temps we have already started getting, is a nightmare for watchmakers, lol.
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