Restore the water resistance of your timepieces with this Mini Rubber Washer O-Ring Set for Watch Crowns. Packed in a 10-grid organized storage case, these high-grade mini rubber seals are ideal for watch repair technicians, horologists, and DIY watch enthusiasts replacing worn or dry-rotted crown gaskets. Covering 10 distinct precision sizes, this kit ensures a tight waterproof seal to protect delicate watch movements from moisture, dust, and water ingress.
Key Features & Highlights
10-Grid Assorted Organizer Box
Comes neatly organized in a 10-compartment clear storage case with a labeled lid chart for quick size selection.
Precision Crown Water Sealing
Designed specifically for watch crowns to maintain water-resistant integrity and shield internal mechanisms.
Durable Elastic Rubber
Made from premium black rubber material with excellent elasticity and deformation recovery for long-lasting seal performance.
Essential Repair Tool Kit
A must-have accessory kit for watch repair shops, hobbyists, and horology enthusiasts doing routine crown maintenance.
Included 10-Grid O-Ring Size Chart
| Grid 1 |
Grid 2 |
Grid 3 |
Grid 4 |
Grid 5 |
| 1.4 x 0.6 x 0.4 mm |
1.5 x 0.6 x 0.7 mm |
1.6 x 0.6 x 0.5 mm |
1.7 x 0.7 x 0.5 mm |
1.8 x 0.8 x 0.5 mm |
| Grid 6 |
Grid 7 |
Grid 8 |
Grid 9 |
Grid 10 |
| 1.9 x 0.8 x 0.7 mm |
2.4 x 1.4 x 0.5 mm | 2.8 x 1.75 x 0.53 mm | 3.2 x 1.8 x 0.7 mm |
3.6 x 1.7 x 0.8 mm |
Product Specifications
Product Name:10 Grid Waterproof Watch Crown O-Ring Set
Item Type:Watch Repair Tools & Parts
Material Composition:High-Quality Flexible Rubber
Box Dimensions:8.6 cm x 6.4 cm x 1.6 cm
Total Product Weight:Approx. 30.3 grams
Compartment Count:10 Grid Organized Case
Recommended Use:Watch Crown Waterproof Seal Replacement
Chemical Safety:Free from High-Concerned Chemicals
Installation & Usage Tips
- Selection: Measure the original crown gasket or stem groove before choosing the matching O-ring size from the lid chart.
- Application: Lightly coat the rubber O-ring with watchmaker silicone grease before inserting into the crown for optimal waterproofing and smoother stem rotation.
- Measurement Disclaimer: Please note that dimensions are measured manually, and a minor tolerance error of 1-3mm may occur due to manual assembly.