Citizen Spare Part 392-0455 (1 Piece) – Caseback Gasket – NOS

Original Citizen case back gasket with reference 392‑0455 (Citizen article no. 91433920455) from unused old stock (NOS). Supplied in the original Citizen bag with label (純正部品 / Genuine Parts / "1 PCE") – this is a single piece. On the original label, the gasket is referred to as "Oリング" (O-ring); technically, it is the case back gasket.

This gasket is listed, among others, for the Citizen case reference 4‑213319, where it seals the case back (possibly also suitable for other references). It is essential for restoring the original water resistance. Separately listed for the same reference – and not included here – are the crystal gasket (393‑4925) and the bezel gasket (393‑4926).

The part is unused and ideal for the professional overhaul of classic Citizen watches, for which suitable original gaskets are now difficult to obtain.

Manufacturer: Citizen Watch Co., Ltd. (純正部品 / Japan).

Warranty (used) This is an original part (NOS) stored for decades. The limitation period for claims for defects (statutory warranty) is 12 months from delivery.

Note As this is an old stored gasket, the material may lose elasticity or become brittle due to age. Therefore, a guarantee of water resistance is not possible; the gasket should be checked before installation and only installed professionally.