0.9mm Height 0.45mm Thick Waterproof Watch Crystal I Ring White Plastic Gasket 40.5mm- 45mm Inner Diameter for Watch Glass W6844

0.9mm Height 0.45mm Thick Waterproof Watch Crystal I Ring White Plastic Gasket 40mm to 45mm Inner Diameter for Watch Glass W6844

It is used on watch crystal to make the watch waterproof, NOT watch back case cover! for professional users!you have to know the exact diameter and thickness of your watch crystal before buying.

Height 0.9mm, thickness appr. 0.45mm, fits for 1.0-1.2mm thick watch crystal

INNER Diameter: 40.5mm... 45mm Inner Diameter, Please note that this is inner diameter, NOT outside diameter

1 piece per order, please choose the diameter that you need.

Package included: 1 piece * Waterproof I-ring