Leaky pipes. Malfunctioning engines. What’s the common culprit? A worn-out O-ring seal.
O-rings are small but essential—preventing leaks, saving costs, and ensuring safety.
O-ring seals work by compressing between two surfaces to block gas or liquid leakage. They’re used in engines, valves, pumps, and more.
This guide breaks down O-ring materials, failures, applications, and how to choose the best one—based on real use cases.
Каково назначение уплотнительного кольца?
O-rings fill the gap between two surfaces to form a pressure-tight seal.
They’re the most widely used seals in industrial and automotive systems.
They prevent gas, oil, and air from escaping—even under pressure or vibration.
O-rings are popular because they’re simple, cheap, and effective. Compared to other sealing methods, they’re easier to install and require less space.
Need a deep dive? Read What Are O-Rings and How Do They Work?
What’s the Difference Between an O-Ring and a Gasket?
Both prevent leaks, but they work differently.
Уплотнительные кольца fit into a groove and seal by deformation under pressure.
Прокладки are flat and compress between two surfaces.
Use an O-ring when your system involves dynamic movement, high pressure, or rotary components.
Want to learn about alternatives like lip seals or V-rings? Check Types of Oil Seals: Pros, Applications & Comparison Guide
Which O-Ring Material Should You Choose?
Different materials mean different performance.
NBR (nitrile) resists oil well. FKM (Витон) handles heat and chemicals. ЭПДМ suits steam and outdoor use. Силикон works in extreme temperatures.
If you’re sealing hot oil under pressure, check out this comparison:
👉 FKM vs. NBR – Which to Use in High Temp?
👉 Buna vs. Nitrile: What’s the Difference?
Also see our custom solution case:
FDA-Grade Silicone O-Rings – When & Why to Use
How Do I Measure the Right O-Ring Size?
Choosing the wrong size is a recipe for leaks.
Use these two key dimensions:
- ID (внутренний диаметр)
- CS (cross-section width)
Need help?
👉 How to Measure O-Ring Sizes Correctly
Or build your own with our Набор для изготовления уплотнительных колец for custom setups.
Почему уплотнительные кольца выходят из строя?
Even great seals break—if used wrong. Here are common issues:
| Failure Reason | Последствие |
|---|---|
| Неправильный материал | Chemical attack |
| Сверхсжатие | Deformation & leaks |
| Несоосность канавок | Uneven sealing |
| Отсутствие смазки | Early wear |
For an in-depth guide:
👉 Top Seal Failure Causes & How to Prevent Them
Where Can You Buy O-Rings with Low MOQ?
Need 100 pcs instead of 10,000?
At Hengoseal, we support small MOQ orders for prototyping, spare parts, and low-volume production.
We supply OEM & branded O-ring seals with fast global shipping.
Заключение
O-ring seals may be tiny, but choosing the right one ensures leak-proof performance, long equipment life, and less maintenance.
🔗 Related Reads
📘 Material Selection:
- Уплотнительные кольца из буна-каучука и нитрила
- FKM vs. NBR – High Temp Applications
- Silicone vs FKM for FDA-Grade Sealing
- EPDM vs. FKM – Which One to Choose?
📐 Sizing & Selection Tips:
- How to Measure O-Ring Sizes Correctly
- How to Choose the Right O-Ring Kit
- O-Ring Assortment Kit – What You Need to Know
🚫 Failure Prevention:
📩 Ready to Order or Customize O-Rings?
📧 Электронная почта: [email protected]
📞 WhatsApp: +86 17622979498
RU 
EN 
BN 
AR 
CS 
DA 
DE 
EL 
EO 
ES 
IT 
FR 
PT 
ID 
JA 
ML 
RO 
VI 
UK 
TR 
TH 
KO