0.9 mm Thick Rubber Silicone Watch Gasket O-Ring Back Case Assorted (31mm-40mm)

Description:
Material: Silicone
This is a set of multiple pieces new o-rings gaskets,the o-rings thickness 0.5mm, 0.6mm,0.7mm,0.8mm,0.9mm
Rubber watch gasket set that is installed on the watch back case,can cover the gap between the watch band and movement

Play a role in watch waterproof,suitable for watch repair and DIY watchmaker.

Specification:
Small size specification:
0.9 mm thickness specification, 31mm - 40mm, about 500 in a large bag. The number of each packet is about 30-50, a total of 10 packets