180-Piece O-Ring Watch Gasket Rubber Sealing Back Cover Repair Kit

Keep your timepieces water-resistant and looking their best with this comprehensive 180-Piece O-Ring Watch Gasket Rubber Sealing Kit. Designed for hobbyists and professional watchmakers alike, this all-in-one set gives you everything you need to replace worn or damaged back cover gaskets and restore a proper seal on a wide range of watches.

Why You'll Love This Kit

• 180 Pieces in Total: 18 different size variations, with 10 pieces of each size — ensuring you always have the right gasket on hand.
• Precision Sizing: Each O-ring measures approximately 0.5 mm in thickness, with diameters spanning roughly 0.63 in (16 mm), designed to fit a broad range of watch back covers.
• Durable Rubber Construction: Made from quality rubber that maintains its shape and elasticity over time, providing a reliable seal between the watch case back and movement.
• Splash & Moisture Resistant Function: A properly fitted gasket helps protect the watch movement from moisture ingress, making this kit essential for maintenance and restoration work.
• Versatile Compatibility: Suitable for a wide variety of watch brands and case styles — ideal for back cover sealing, strap-to-case junction sealing, and general watch repair tasks.
• Great Value: A cost-effective solution for watch enthusiasts, repair shops, and hobbyists who need a reliable supply of gaskets without ordering each size separately.

Product Specifications

• Total Pieces: 180 (18 types × 10 pieces each)
• Material: Rubber
• Approximate Size: 0.5 mm thickness × 16 mm diameter (0.02 × 0.63 in)
• Use: Watch back cover sealing, gasket replacement, watch repair

Who Is This For?

Whether you're a seasoned watchmaker running a repair bench or a passionate collector who likes to service your own timepieces, this 180-piece rubber O-ring kit is the practical, must-have addition to your toolkit. It also makes a thoughtful gift for anyone who enjoys horology or DIY watch repair.

For additional guidance on watch tools and repair best practices, visit the NIST Time & Frequency Division for authoritative information on timekeeping standards.

Frequently Asked Questions

Q: What does the 180-Piece O-Ring Watch Gasket Kit include?

A: The kit includes 180 rubber O-ring gaskets in 18 different size variations, with 10 pieces per size. Each gasket is designed to seal the back cover of a watch case, helping to protect the internal movement from dust and moisture.

Q: What material are the watch gaskets made from?

A: The O-ring gaskets are made from durable rubber, which maintains its flexibility and sealing properties over time. Each ring measures approximately 0.5 mm in thickness and 16 mm in diameter (0.5 × 16 mm / 0.02 × 0.63 in).

Q: What types of watches is this O-ring gasket kit compatible with?

A: This kit is designed to be broadly compatible with a wide range of watch styles and brands. With 18 different size options included, it suits many standard case back designs — making it an excellent all-around solution for watch repair shops and hobbyist watchmakers.

Q: Can a beginner use this watch gasket repair kit?

A: Absolutely. The kit is straightforward to use — simply select the correct O-ring size for your watch back cover and fit it into the groove before closing the case. Having 10 pieces of each size means you have spares available if needed, making it beginner-friendly and convenient.