Watch Case Back Gasket Red Plastic 15-40mm

Watch Case Back Gasket Red Plastic 15-40mm (5 pcs)

$2.50
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Quantity Discount (%) Price
1 - 2 — $2.50
3 - 4 5 % $2.38
5 - 9 7 % $2.33
10 - 14 10 % $2.25
15+ 15 % $2.13
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Product Description

This red plastic watch case back gasket set includes 5 pieces, available in diameters ranging from 15mm to 40mm, with a cross-section size of 0.60 × 0.85 mm. Designed to provide a reliable seal between the case back and the watch case, these gaskets help maintain water resistance and protect the movement from dust and moisture. They are an ideal replacement for worn or degraded original gaskets during routine maintenance or battery replacement.

Features & Function

  • Red plastic material – flexible and easy to install

  • Multiple diameters – 15–40mm to fit various case sizes

  • Standard cross-section – 0.60 × 0.85 mm

  • Reliable sealing – maintains water resistance

  • Set of 5 – convenient for multiple repairs

Specifications

  • Material: Red plastic (PVC / silicone blend)

  • Diameter Range: 15mm – 40mm (5 pieces, sizes may vary)

  • Cross-Section Size: 0.60 × 0.85 mm

  • Type: Case back gasket / O-ring

  • Compatibility: Various watch case backs

  • Condition: Brand new, aftermarket

Applications

  • Replacement for worn, cracked, or degraded case back gaskets

  • Battery replacement – restoring water resistance after battery change

  • Routine maintenance – replacing gaskets during full service

  • Watch repair – for professional and DIY use

  • Suitable for watchmakers, repair technicians, and DIY enthusiasts

FAQs

1. Is this an original brand gasket set?

No, this is a generic aftermarket gasket set, not from a specific brand. It is designed as a compatible and affordable replacement.

2. What do the numbers 0.60 × 0.85 mm mean?

These numbers refer to the cross-section dimensions of the gasket: 0.60mm (height) and 0.85mm (width) . This is a standard size for many watch case back gaskets.

3. Are the gaskets pre-lubricated?

These gaskets are typically supplied dry (without lubrication). We recommend applying a small amount of silicone grease before installation to ensure proper sealing.

Why Choose SOFLY Watch Parts?

  • 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.

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