0.6mm Height Waterproof I-ring Plastic Gasket 16mm to 25.5mm for Watch Crystal Glass W4213

0.6mm Height Waterproof I-ring Plastic Gasket 16mm to 25.5mm for Watch Crystal Glass W4213

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 0.6mm, thickness appr. 0.35mm, fits for 0.7-1.0mm thick watch crystal

INNER Diameter:

16/16.5/17/17.5...25/25.5MM

Please note that this is inner diameter, NOT outside diameter

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

Package included: 1 piece