![ISO Swiss Flat Case Back Gasket number 635, package of 2, ID 27.80 mm, OD 30.80 mm, thickness 0.30 mm](http://perrinwatchparts.com/cdn/shop/files/67-5105-160_bb7d54f4-f5ca-4eb2-804c-a2c4b2769e4e_300x300.jpg?v=1710962149)
ISO Swiss Flat Case Back Gasket number 635, package of 2, ID 27.80 mm, OD 30.80 mm, thickness 0.30 mm
by Perrin
$3.20
SKU 67-5105-635
ISO Swiss flat case back gasket number 635, package of 2 gaskets, ID 27.80 mm OD 30.80 mm thickness 0.30