Generic Cartier Drive 3978 Case Back Sapphire Crystal 26.5mm

Product Description

This generic flat round sapphire crystal is designed for the Cartier Drive 3978 case back, measuring 26.5mm in diameter with a thickness of 1.1mm (also compatible with 1.2mm). Including a gasket, it offers excellent optical clarity and scratch resistance for reliable case back glass replacement.

Features & Function

• Flat round shape ensures precise fit for case back opening

• 1.1mm/1.2mm thickness provides balanced strength and slim profile

• Gasket included for easier installation and basic sealing

• High hardness (9 Mohs) resists daily scratches and wear

Specifications

• Diameter: 26.5 mm

• Thickness: 1.1 mm (compatible with 1.2 mm)

• Included: Gasket

• Shape: Flat Round

• Material: Synthetic sapphire

• Compatible Model: Cartier Drive 3978 (case back)

Applications

• Replacement case back crystal for Cartier Drive 3978

• Ideal for restoring movement visibility in exhibition case backs

FAQs

1.Is this an original Cartier part?
No, it is a generic compatible crystal with gasket, not OEM.

2.Will it fit my Drive 3978 case back perfectly?
Only if your case back uses exactly 26.5mm round glass with 1.1mm or 1.2mm thickness; measure before purchase.

3.Does the included gasket guarantee waterproofing?
No, it aids sealing but professional pressure testing is recommended after installation.