AT CHECKOUT PLEASE LEAVE YOUR CASE NUMBER
Back of case gasket for many Seiko including 7S26-0040 - and most Seiko 5 models.
This is a copy of a very common gasket used by Seiko in dozens of its 7S26 and 7S36 models. If you are not sure that you need this gasket please send me a message and I will find out for you
Not made by Seiko but is the same size and similar quality.
If you buy more than one you can save money.
Cant find a part? Ask me!