Choosing the wrong seal can lead to air leaks and costly downtime.
A piston seal holds air pressure inside the cylinder; a rod seal prevents leaks along the rod. Both are critical but serve different purposes.
Here's how to select the right seal for your pneumatic application.
What’s the Main Difference Between a Piston Seal and a Rod Seal?
They operate in different areas of the cylinder.
피스톤 씰 are installed in the bore to manage chamber pressure.
로드 씰 are placed at the cylinder head to stop air leakage along the moving rod.
They work together to maintain system efficiency. See the full breakdown in our pneumatic cylinder seal guide.
What Are the Key Functional Differences?
| 특징 | 피스톤 씰 | 로드 씰 |
|---|---|---|
| 위치 | 실린더 내부 보어 | Cylinder head |
| 기능 | Seals pressure between chambers | Prevents external air leakage |
| Movement | Static or dynamic | Always dynamic |
| Failure symptoms | Blow-by, reduced stroke | Visible air leak, reduced pressure |
Consider adding 더스트 와이퍼 씰 for added protection in dirty environments.
Which Materials Are Best for Each Seal?
피스톤 씰을 위한 최고의 재료
| 재료 | Benefits | 사용 사례 |
|---|---|---|
| 영어: NBR (네이버) | Flexible and low cost | General air cylinders |
| 티피유 | 내마모성 | Automation systems |
| PTFE | 낮은 마찰 | 고속 실린더 |
| 에프케이엠 | Heat and chemical resistance | Industrial cylinders |
More info: Piston Seal Types & Materials
로드 씰을 위한 최고의 재료
| 재료 | Benefits | 사용 사례 |
|---|---|---|
| 영어: NBR (네이버) | Budget-friendly | Low-speed cylinders |
| 티피유 | Long service life | Heavy-duty cycles |
| 에프케이엠 | 극한 환경 | Chemical or high-temp use |
Explore options: 맞춤형 O-링 메이커
When Should You Use a Piston Seal vs. a Rod Seal?
Use a piston seal for internal chamber sealing.
Use a rod seal to seal around the moving piston rod.
In most cylinders, you’ll use both. For comparison: Piston vs Rod Seal
How to Prevent Common Seal Failures?
- 사용 PTFE 또는 TPU for high-speed or friction-prone systems
- Replace seals every 6–12 months
- 사용 버퍼 씰 to absorb pressure spikes
고품질 피스톤 및 로드 씰은 어디서 구매할 수 있나요?
우리는 공급합니다:
- Rod seals, piston seals, buffer & wiper seals
- 소재 : NBR, TPU, FKM, PTFE
- OEM specs and custom orders
📩 이메일: [email protected]
📞 왓츠앱: +86 17622979498
결론
Rod seals stop leaks along the rod; piston seals maintain pressure in the chamber. Use both for reliable pneumatic performance.
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