---
description: Generic Omega Speedmaster '57 331.12.00 sapphire crystal 31mm domed blue AR with grey gasket. Aftermarket replacement.
title: Generic Omega Speedmaster '57 331.12.00 Sapphire Crystal 31mm - Sofly
image: https://www.soflypart.com/wp-content/uploads/2023/09/DSC01979.jpg
---
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- **Generic Omega Speedmaster ’57 331.12.00 Sapphire Crystal 31mm**
[](https://www.soflypart.com/wp-content/uploads/2023/09/DSC01979.jpg)
# Generic Omega Speedmaster ’57 331.12.00 Sapphire Crystal 31mm
$50.00
You Saved
| Brand | Choose an option Omega- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $50.00 |
| 3 - 4 | 5% | $47.50 |
| 5 - 9 | 7% | $46.50 |
| 10 - 14 | 10% | $45.00 |
| 15+ | 15% | $42.50 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $50.00 |
| 3 - 4 | 5% | $47.50 |
| 5 - 9 | 7% | $46.50 |
| 10 - 14 | 10% | $45.00 |
| 15+ | 15% | $42.50 |
Generic Omega Speedmaster '57 331.12.00 Sapphire Crystal 31mm quantity
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- Covers 99% of Repair Needs
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## Product Description
Generic domed round sapphire crystal for Omega Speedmaster ’57 331.12.00. Diameter 31.0mm, total thickness 1.8mm, step thickness 1.0mm. Blue anti‑reflective coating, includes grey gasket. Aftermarket replacement for damaged original crystals.
## Features & Function
- Domed round with blue AR coating – reduces glare.
- Includes grey gasket – ensures proper sealing.
- Synthetic sapphire – scratch resistant (Mohs 9).
- Drop‑in replacement – no modification needed.
- Affordable alternative to OEM.
## Specifications
| Parameter | Value |
| --- | --- |
| Compatible model | Omega 331.12.00 |
| Diameter | 31.0 mm |
| Total thickness | 1.8 mm |
| Step thickness | 1.0 mm |
| Shape | Domed round |
| Coating | Blue anti‑reflective |
| Gasket | Grey (included) |
| Material | Synthetic sapphire |
| Type | Aftermarket |
## Applications
- Replace scratched, cracked, or damaged original crystals on Omega Speedmaster ’57 331.12.00.
- Professional watch repair and restoration.
## Frequently Asked Questions
**Q1: Genuine Omega part?** No, generic aftermarket.
**Q2: Is the gasket included?** Yes, grey gasket included.
**Q3: Self‑install?** Professional recommended for water resistance.
## 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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