![ISO Swiss Flat Case Back Gasket number 121, package of 2, ID 23.40 mm, OD 25.20 mm, thickness 0.50 mm](http://perrinwatchparts.com/cdn/shop/files/67-5105-121_00a085bd-4695-4c30-bc2f-a04cb12a771e_300x300.jpg?v=1710962018)
ISO Swiss Flat Case Back Gasket number 121, package of 2, ID 23.40 mm, OD 25.20 mm, thickness 0.50 mm
by Perrin
$2.30
SKU 67-5105-121
ISO Swiss flat case back gasket number 121 package of 2 gaskets, ID 23.40 mm OD 25.20 mm thickness 0.50