![ISO Swiss Flat Case Back Gasket number 639, package of 2, ID 30.80 mm, OD 32.50 mm, thickness 0.40 mm](http://perrinwatchparts.com/cdn/shop/files/67-5105-160_532ef755-dd58-4ed9-9a8f-a7781b9aab46_300x300.jpg?v=1710962258)
ISO Swiss Flat Case Back Gasket number 639, package of 2, ID 30.80 mm, OD 32.50 mm, thickness 0.40 mm
by Perrin
$3.20
SKU 67-5105-639
ISO Swiss flat case back gasket number 639, package of 2 gaskets, ID 30.80 mm OD 32.50 mm thickness 0.40