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.

Уплотнения поршня are installed in the bore to manage chamber pressure.
Уплотнения штока 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?

Consider adding пылезащитное уплотнение for added protection in dirty environments.

Which Materials Are Best for Each Seal?

Лучшие материалы для поршневых уплотнений

More info: Piston Seal Types & Materials

Лучшие материалы для уплотнений штока

Explore options: Изготовитель индивидуальных уплотнительных колец

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?

• Использовать ПТФЭ или ТПУ for high-speed or friction-prone systems
• Replace seals every 6–12 months
• Использовать буферные уплотнения to absorb pressure spikes

Где купить высококачественные уплотнения поршня и штока?

Мы поставляем:

• Rod seals, piston seals, buffer & wiper seals
• Материалы: NBR, TPU, FKM, PTFE
• OEM specs and custom orders

📩 Электронная почта: [email protected]
📞 WhatsApp: +86 17622979498

Заключение

Rod seals stop leaks along the rod; piston seals maintain pressure in the chamber. Use both for reliable pneumatic performance.

Browse Related Guides

• How to Replace Cylinder Seals
• Types of Hydraulic Cylinder Seals
• Extend Pneumatic Seal Lifespan

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