21.60 mm x 22.00 mm x 1.20 mm crystal gasket, generic (not genuine), for Cartier® Santos 100, case reference 2878, part number reference MX003HFO. Using generic crystal gaskets may devalue your watch.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Cartier®. Cartier® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.