Citizen Spare Part 392-0019 (1 piece) – Case Gasket (O-Ring) – NOS

Original Citizen case gasket with reference 392‑0019 from New Old Stock (NOS). Offered is a single piece, taken from an original Citizen package (純正部品 / "5 PCS"). On the original label, the gasket is referred to as "Oリング" (O-ring); in common parts databases, it is listed as a case back gasket.

This gasket fits numerous Citizen cases, including references 4‑204107, 4‑205651, 4‑394861, 4‑394909, 4‑394917, 4‑395018, 4‑395026, 4‑395301, 4‑530217, 4‑691270, 4‑700660, 4‑851765, 4‑851773, and 4‑S070732. It seals the case and is essential for restoring the original water resistance.

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 stock 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.