950pcs O Ring Watch Back Gasket Rubber Sealing Washers Set Replacement 12‑30mm 0.5mm

Features: Rubber gasket set that is installed on the watch back case,can cover the gap between the watch band and movement. Play role in watch waterproof,suitable for watch repair and DIY watchmaker. This is a set of 950pcs new o rings gaskets,the o rings different 19 sizes thickness 0.5mm. 19 different sizes from 12 to 30 mm: 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 and 30mm. Comes 50pcs each size in a poly bag (total: 50pcs x 19 = 950pcs). Specifications: Material:rubber Color: black Item standard: Wire diameter: 0.5mm Coil diameter:(19 model, each model has about 50 pieces ) 12mm 13mm 14mm 15mm 16mm 17mm 18mm 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm 29mm 30mm Package include: 1 x Watch gasket set .