65 Pcs O Ring Watch Gasket Kit Waterproof Rubber Watch Seal Washers 4 Sizes | 0.6, 0.7, 0.8, 0.9mm, Replacement O Rings for Watches Repair Tools, Water/Dust/Oil/Heat Resistant, for Watches Back Cover

Package Content65Pcs O gaskets in 4 sizes: 0.6 mm(13-40mm, 28PCS) 0.7 mm(25-40mm, 16PCS) 0.8 mm(28-38mm, 11PCS) 0.9 mm(31-40mm, 10PCS). Ample quantity for daily needs Quality MaterialWatch gaskets made of material, flexible, wear-resistant and durable. Excellent durability and sealing for long-lasting daily use Easy to InstallFlexible seal rings easy to install and remove. Strong resistance to oil, water, and tearing ensures a firm and long-lasting seal for back covers Waterproof ProtectionIdeal O replacements for back cover seals. Install gasket between and back cover to protect internal from dust and water damage KitPerfect for watchmakers and professionals. Sufficient quantity gasket for long-term use and various projects