![ISO Swiss Flat Case Back Gasket number 633, package of 2, ID 28.40 mm, OD 30.50 mm, thickness 0.26 mm](http://perrinwatchparts.com/cdn/shop/files/67-5105-160_07fb7e01-9a61-4f2f-9534-f519ead537b7_300x300.jpg?v=1710962168)
ISO Swiss Flat Case Back Gasket number 633, package of 2, ID 28.40 mm, OD 30.50 mm, thickness 0.26 mm
by Perrin
$3.20
SKU 67-5105-633
ISO Swiss flat case back gasket number 633, package of 2 gaskets, ID 28.400 mm OD 30.50 mm thickness 0.25