NMK356 SSK Slim Sapphire Crystal for Flat Inserts
GMT movements are great, they allow you to track multiple time zones with ease. However, this added functionality often comes at a cost—thickness. The additional gears and components required for the GMT function naturally increase the height of the movement, making most GMT-equipped watches bulkier than their standard counterparts.
That's why we've engineered the NMK356 SSK Slim Sapphire Crystal specifically to reduce the overall thickness of your Seiko SSK. It is designed to be installed with our SSK Slim Bezels and a flat bezel insert to give you the slimmest SSK mod possible.
Paired with a flat bezel insert, you can achieve an SSK build with a thickness of just 12.3mm—making it 10% slimmer than the stock SSK that's 13.6mm thick!
Parts Compatibility:
Movement: Compatible with NH34/35/36/70/71 etc
Crystal Gasket: Compatible with SSK Crystal Gaskets.
Bezels and Bezel Inserts: Any SSK Slim Bezel and Flat SKX007/SRPD Bezel Inserts.
Compatible with Seiko 5 SSK GMT Collection: SSK001, SSK003, SSK005 etc
Customer Reviews
I’ve always admired the timeless design of the Rolex GMT Pepsi. To give my underutilized Seiko SSK series a fresh look, I decided to mod it. After researching online, I discovered Namoki, a local SoCal supplier with the perfect parts. The shipping was incredibly quick, and the packaging was top-notch. Namoki's quality and service have me considering future modding projects for my other watches.
Perfect fit!
This crystal made me like my SSK again. It’s a huge improvement over the stock glass.
This crystal fit my SSK perfectly. Installed nice and easy and looks so much better.
It’s it’s perfectly