Bezel, crown and crystal options on a Seiko 62MAS

In this episode, we finally graduate to the case and consider bezel options, our choice of crown, and set about removing the old crystal and replacing it with new.
The playlist for this whole series of videos can be found here: • Hot-rodding a Seiko 62MAS
An introduction to this series can be found on my blog here: adventuresinam...

[@ajroy03]

Thanks for sharing Martin! Can you explain more of your case/bezel cleaning process?

[@amateurwatchfettler]

That depends on how dirty they are. If a full on grunge-fest, then I start with pegwood to manually remove as much grot as possible. If there is any surface corrosion, then I may use brass tweezers to remove as much of that as I can. Once the manual clean is complete I will then immerse in an ultrasonic bath and/or work on the case with a toothbrush/toothpaste/hot water. A combination of all of the above will typically produce very good results. And then on final assembly, rodico putty to remove any bits of dust and fluff that might have accumulated between main clean and assembly.

[@foolsgold39]

I like the monster seiko press !
How much pressure does it take to push a crystal in?

[@vanwilder1101]

My favourite watch the 62mas- it's one of those things that I just can't stop looking at, a bit like a Porsche 356. Can i ask, why do modern dive watches use a glass gasket and these only had a retainer ring? Im gathering the modern gasket is more effective? P.s If you don't want that new Bezel insert, ill have it...😁

[@amateurwatchfettler]

A modern watch can achieve 200m water resistance with an interference fit glass or sapphire crystal seated within a hard plastic gasket but in my experience getting the crystal to seat square is much more challenging than fitting a tension ring-equipped acrylic crystal or a glass crystal employing an L-profile a rubber gasket. These older divers were rated at 150m; modern divers easily to 200m. In either case though, those ratings are academic. Most wearers would rarely if ever need more than 50m water resistance.

[@vanwilder1101]

@@amateurwatchfettler You mean you can't use an Acrylic crystal with a plastic gasket? Only sapphire?

[@amateurwatchfettler]

@@vanwilder1101 Yes, that's right. Acrylic crystals are flexible and achieve their seal by bending to the will of the rigid wall of the case whereas sapphire crystals are rigid and need a pliant partner to achieve their seal i.e. a rubber or nylon gasket.

[@babayaga6680]

Which swiss watch uses same bezel?

[@andygraham69]

Hello I have a 1965 small crown 62mas with no bezel could you give me some advice on where to obtain a complete bezel that will be inkeeping really appreciate your help 😊

[@amateurwatchfettler]

I would say that, while not impossible, the prospect of finding a complete bezel and insert is approaching vanishingly small. I have seen complete NOS bezels on eBay and (perhaps) Yahoo Japan auctions but in the distant past. If such were to emerge now, they may achieve closing prices that are disproportionately high compared to the value of a complete watch. So I am afraid, no realistic advice other than to keep your eyes open but don't hold your breath.

[@Watch_Papa]

What’s the best way to remove a bezel like this, pry tool doesn’t seem to work

[@amateurwatchfettler]

I have always found the Japanese-style case knives where the blade is perpendicular to the handle to work well. You could try one of the double-bladed snap-on case back openers if you bezel is particularly stubborn.