---
description: 50-piece watch gasket O-ring set, 0.8mm, 31-40mm. Rubber waterproof seals for case backs. Ideal for repair and battery replacement.
title: Watch Gasket Waterproof O-Ring 0.8 mm (50 pcs) - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/08/DSC01057_副本.jpg
---
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- **Watch Gasket Waterproof O-Ring 0.8 mm (50 pcs)**
[](https://www.soflypart.com/wp-content/uploads/2019/08/DSC01057_副本.jpg)
# Watch Gasket Waterproof O-Ring 0.8 mm (50 pcs)
$9.00
You Saved
| Thickness | Choose an option 0.8mm Thick |
| --- | --- |
| Size | Choose an option 31mm 32mm 33mm 34mm 35mm 36mm 37mm 38mm 39mm 40mm- 31mm
- 32mm
- 33mm
- 34mm
- 35mm
- 36mm
- 37mm
- 38mm
- 39mm
- 40mm
Clear |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $9.00 |
| 3 - 4 | 5% | $8.55 |
| 5 - 9 | 7% | $8.37 |
| 10 - 14 | 10% | $8.10 |
| 15+ | 15% | $7.65 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $9.00 |
| 3 - 4 | 5% | $8.55 |
| 5 - 9 | 7% | $8.37 |
| 10 - 14 | 10% | $8.10 |
| 15+ | 15% | $7.65 |
Watch Gasket Waterproof O-Ring 0.8 mm (50 pcs) quantity
Add to cart
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[Checkout](https://www.soflypart.com/checkout/)
- Covers 99% of Repair Needs
- Wholesale Discounts
- Fast Global Shipping
- 24/7 Customer Support
## Product Description
This **Watch Gasket Waterproof O-Ring Set** includes **50 pieces** of high-quality rubber O-rings with a thickness of **0.8 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.
## Features & Function
- **50-piece set** – ample supply for multiple repairs
- **10 diameter sizes** – covers 31mm to 40mm range
- **Standard 0.8mm thickness** – fits most watch case backs
- **Durable rubber material** – flexible, corrosion-resistant, and long-lasting
- **Reliable waterproof sealing** – protects movement from moisture and dust
## Specifications
- **Material**: Rubber / Silicone
- **Thickness**: 0.8 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
## 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
- Suitable for **watchmakers**, **repair technicians**, and **DIY enthusiasts**
## FAQs
**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. What is the difference between 0.8mm and 0.9mm thickness?**
The **0.8mm** thickness is suitable for case backs with **narrower gasket grooves**, while the **0.9mm** version fits **wider grooves**. Always check your watch’s original gasket thickness before ordering.
## 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 **info@soflypart.com** or WhatsApp **+86 18620212114**.
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