O Ring Watch Case Gasket Rubber Seal, 18 Size Watch case Seals Ring | 0.5/0.6 16-30mm Rubber Seal Washers Set Replacement O Rings for Watches Repair o-ring-watch-gasket (180-200PCS)

This strip comes in a full with an approximate total quantity of 180-200 pieces.
It offers two thickness options: 0.5 mm and 0.6 mm. The 0.5 mm-thick strips are available in lengths of 16mm, 18mm, 20mm, 21mm, 23mm, 24mm, 26mm, 27mm and 30mm; while the 0.6 mm-thick strips come in lengths of 16mm, 17mm, 20mm, 22mm, 23mm, 24mm, 25mm, 26mm and 28mm.
WATERPROOF: o-rings provide optimal sealing to keep moisture and dust out of cases, maintaining the waterproof integrity and protecting internal components
QUALITY CONSTRUCTION: Made from high-quality material with excellent elasticity and resilience for reliable sealing, long-lasting durability, and suitability for repeated use in repairs
VERSATILE SIZE RANGE: Includes 0.5 mm thickness gaskets in 9 sizes ( 0.63 / 0.71 / 0.79 / 0.83 / 0.91 / 0.94 / 1.02 / 1.06 / 1.18 inch diameter) and 0.6 mm thickness in 9 sizes ( 0.63 / 0.67 / 0.79 / 0.87 / 0.91 / 0.94 / 0.98 / 1.02 / 1.10 inch diameter)
KIT: Essential for watchmakers and DIY enthusiasts for back, stem gasket, and maintaining timepiece integrity to extend service life