Oil leaks, coolant seepage, fuel vapor loss — all trace back to one culprit: the wrong O-ring. I’ve helped many automotive clients solve this by choosing the right material.
O-rings are critical in fuel systems, oil circuits, and coolant lines. The right material ensures heat resistance, chemical stability, and long-term durability.
Let’s see how different O-ring materials perform under engine conditions.
Why Is O-Ring Material Selection Crucial for Engines?
Automotive engines expose seals to:
- 고온
- Aggressive fuels and oils
- Continuous mechanical stress
Using the wrong material leads to leaks, component failures, and costly repairs.
For how O-rings function in sealing systems, visit our O-Ring Working Guide.
Which O-Ring Material Performs Best in High-Temperature Engines?
| 재료 | Temp Limit | 저항 | 최상의 사용 |
|---|---|---|---|
| FKM(비톤®) | 200°C | 연료, 오일, 합성 윤활유 | Turbo systems, fuel injectors |
| NBR(니트릴) | 120도 | Petroleum oils, water | General engine sealing |
| 실리콘 | 230도 | Coolants, ozone, cold temps | EV cooling systems, HVAC |
For custom-sized seals, explore our O-링 제작 도구.
How Different Engines Need Different O-Ring Materials?
| 엔진 유형 | 추천 자료 | 왜? |
|---|---|---|
| Sports Cars | 에프케이엠 | 고온 및 합성유 내성 |
| Diesel Trucks | 영어: NBR (네이버) | Cost-effective, reliable oil sealing |
| Electric Vehicles | 실리콘 | Excellent for coolant and cold environments |
| Industrial Engines | 에프케이엠 | Handles heat, pressure, and chemical exposure |
FKM vs NBR: Which O-Ring is Better for Engine Sealing?
| 특징 | 에프케이엠 | 영어: NBR (네이버) |
|---|---|---|
| 온도 저항성 | 최대 200°C | 최대 120°C |
| Fuel/Oil Resistance | 훌륭한 | 보통의 |
| 내구성 | 높은 | 중간 |
| 비용 | 더 높은 | 낮추다 |
✅ Verdict: Choose FKM for performance engines, NBR for standard sealing.
How to Measure O-Ring Size for Automotive Engines?
| Size Standard | 내경(mm) | 치수(mm) |
|---|---|---|
| AS568-110 | 7.65 | 1.78 |
| AS568-214 | 22.22 | 3.53 |
| AS568-325 | 63.09 | 5.33 |
Tip: Always use OEM specs or digital calipers for precise measurement.
Common Mistakes When Choosing Automotive O-Rings
- ❌ Wrong durometer leads to seal compression failure
- ❌ Incompatible lubricant causes chemical degradation
- ❌ Low-pressure rated O-rings fail in high-pressure systems
- ❌ Dry installation damages sealing surfaces
- ❌ Using NBR in fuel systems (swelling risk)
Where to Source High-Performance Automotive O-Rings?
Hengoseal offers:
- Automotive-grade FKM, NBR, Silicone O-Rings
- Custom O-Ring sizes for OEM replacements
- Fast delivery with no MOQ
🛒 Shop now:
📩 이메일: [email protected]
📞 왓츠앱: +86 17622979498
결론
For reliable, long-lasting engine sealing:
- 사용 FKM O-링 for high-performance and fuel systems
- 선택하다 NBR 오링 for standard oil sealing
- Opt for 실리콘 O-링 in EV cooling and HVAC applications
Get Premium Automotive O-Rings from Hengoseal
📩 이메일: [email protected]
📞 왓츠앱: +86 17622979498
Related topic
FKM vs NBR: Which O-Ring Material is Right for Your Engine?
O-링 비용 및 선택 가이드
O-Rings Explained: How They Work & Where They're Used
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