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.
Piston contaları are installed in the bore to manage chamber pressure.
Çubuk contaları 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?
| Özellik | Piston Contası | Çubuk contası |
|---|---|---|
| Konum | Silindir deliğinin içi | Cylinder head |
| İşlev | 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 toz silecek contaları for added protection in dirty environments.
Which Materials Are Best for Each Seal?
Piston Contaları İçin En İyi Malzemeler
| Malzeme | Benefits | Kullanım Örneği |
|---|---|---|
| NBR | Flexible and low cost | General air cylinders |
| TPU | Aşınmaya dayanıklı | Automation systems |
| PTFE | Düşük sürtünme | Yüksek hızlı silindirler |
| FKM | Heat and chemical resistance | Industrial cylinders |
More info: Piston Seal Types & Materials
Çubuk Contaları İçin En İyi Malzemeler
| Malzeme | Benefits | Kullanım Örneği |
|---|---|---|
| NBR | Budget-friendly | Low-speed cylinders |
| TPU | Long service life | Heavy-duty cycles |
| FKM | Aşırı ortamlar | Chemical or high-temp use |
Explore options: Özel O-Ring Üreticisi
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?
- Kullanmak PTFE veya TPU for high-speed or friction-prone systems
- Replace seals every 6–12 months
- Kullanmak tampon contaları to absorb pressure spikes
Yüksek Kaliteli Piston ve Biyel Contaları Nereden Alınır?
Biz tedarik ediyoruz:
- Rod seals, piston seals, buffer & wiper seals
- Malzemeler: NBR, TPU, FKM, PTFE
- OEM specs and custom orders
📩 E-posta: [email protected]
📞WhatsApp: +86 17622979498
Çözüm
Rod seals stop leaks along the rod; piston seals maintain pressure in the chamber. Use both for reliable pneumatic performance.
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