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This Watch Gasket Waterproof O-Ring Set includes 50 pieces of high-quality rubber O-rings with a thickness of 0.9 mm, available in diameters from 31mm to 40mm. These gaskets are designed to provide reliable waterproof sealing for watch case backs and crowns, ensuring protection against moisture and dust ingress during daily wear.
50-piece set – ample supply for multiple repairs
10 diameter sizes – covers 31mm to 40mm range
Standard 0.9mm thickness – fits most watch case backs
Durable rubber material – flexible, corrosion-resistant, and long-lasting
Reliable waterproof sealing – protects movement from moisture and dust
Material: Rubber / Silicone
Thickness: 0.9 mm
Diameter Sizes: 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 mm
Quantity: 50 pieces (5 per size)
Type: Case back O-ring / Gasket
Condition: Brand new, aftermarket
Replacement for worn, cracked, or degraded case back gaskets
Battery replacement – restoring water resistance after battery change
Routine maintenance – replacing gaskets during full service
Suitable for watchmakers, repair technicians, and DIY enthusiasts
1. Are these original brand gaskets?
No, these are generic aftermarket gaskets, not from a specific brand. They are designed as compatible and affordable replacements.
2. What is the material of these O-rings?
These O-rings are made of durable rubber/silicone material, offering good flexibility and corrosion resistance for reliable waterproof sealing.
3. Which size should I choose for my watch?
Measure the inner diameter of your watch case back or the old gasket diameter, then select the corresponding size from the 31-40mm range.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
