Seiko Tuna bezel gasket replacement - fixing a loose bezel

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Today I'll be changing the gasket on my Seiko Tuna that had the bezel turning very lite when I received it, making me think something is wrong.
When I removed it I noticed the rubber gasket was broken with a piece missing, so I ordered a set of gaskets for the 7548 and 7C43 Tunas and here I show you how to replace it
The SBBN015 is one of my all time favorites as it comes on a great bracelet and has a beautiful black bezel. Powered by the legendary 7S46 high-torque quartz movement it is considered one of the best quartz diver out there.
I hope you enjoy :)

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