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This generic flat round sapphire crystal is designed for the Cartier Tank 3507 case back, measuring 25.5mm in diameter with a thickness of 1.0mm. Including a gasket, it offers excellent optical clarity and scratch resistance for reliable case back glass replacement.
Flat round shape ensures precise fit for case back opening
1.0mm thickness provides balanced strength and slim profile
Gasket included for easier installation and basic sealing
High hardness (9 Mohs) resists daily scratches and wear
Diameter: 25.5 mm
Thickness: 1.0 mm
Included: Gasket
Shape: Flat Round
Material: Synthetic sapphire
Compatible Model: Cartier Tank 3507 (case back)
Replacement case back crystal for Cartier Tank 3507
Ideal for restoring movement visibility in exhibition case backs
1.Is this an original Cartier part?
No, it is a generic compatible crystal with gasket, not OEM.
2.Will it fit my Tank 3507 case back perfectly?
Only if your case back uses exactly 25.5mm round glass; measure before purchase.
3.Does the included gasket guarantee waterproofing?
No, it aids sealing but professional pressure testing is recommended after installation.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
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