100 FLAT WATCH GASKETS o'ring rubber seal washers 4 watches watchmakers assorted

100 flat rubber watch gaskets in assorted sizes, ideal for general watch repair and case back sealing.

⭐ At a glance

📏 Sizes range approx. 17.5mm to 25mm

📏 Thickness: 0.5mm

📦 Pack of 100 assorted gaskets

✔️ Condition: New with tags

✅ Fits

An assorted mixed pack covering a wide range of case back and crystal sizes from approx. 17.5mm to 25mm, useful for general watchmaking and repair work across many watch models.

⚠️ Please check the exact gasket size needed for your case or crystal before fitting, as this is a mixed assortment rather than a single fixed size.