Choosing the wrong seal type can lead to performance failures and higher maintenance costs. I’ve seen systems shut down simply because a hydraulic seal was used where a pneumatic one was needed—or vice versa.
Hydraulic seals are built for high-pressure fluid systems, while pneumatic seals are ideal for low-pressure air systems. This article helps you choose the right one based on pressure, material, and application.
What is the difference between hydraulic and pneumatic seals?
While both prevent leaks and contain pressure, they’re designed for different types of systems.
| คุณสมบัติ | ซีลไฮดรอลิก | ซีลลม |
|---|---|---|
| สื่อปฏิบัติการ | Liquid (Oil, Water) | อากาศอัดหรือแก๊ส |
| การจัดการแรงดัน | Up to 10,000 PSI | Up to 250 PSI |
| องค์ประกอบของวัสดุ | PTFE, FKM, NBR, TPU | TPU, NBR, Silicone |
| ช่วงอุณหภูมิ | -40°C ถึง 200°C | -30°C ถึง 100°C |
| แอปพลิเคชั่น | Heavy equipment, ระบบไฮดรอลิกอุตสาหกรรม | หุ่นยนต์, automation, packaging |
What are the ideal applications for hydraulic seals?
Hydraulic seals are best suited for environments with extreme pressure and heat.
They are used in:
- Mining and excavation equipment
- Press machines and lifts
- Oilfield and marine hydraulics
We often recommend UN hydraulic rod seals และ KDAS buffer seals for high-pressure cylinders in industrial settings.
What are the benefits of pneumatic seals in automation?
Pneumatic seals thrive in systems where speed and cleanliness matter more than pressure.
เหมาะสำหรับ:
- Assembly line actuators
- Medical and pharmaceutical tools
- Food and electronics packaging lines
In these environments, we’ve seen great results with TPU-based pneumatic cylinder seals และ buffer rings for shock absorption.
How do you extend seal lifespan in both systems?
Proper maintenance can double seal lifespan.
Tips:
- Inspect seals monthly for cracking or swelling
- Use correct lubricants and operating pressure
- Keep systems free of dust or fluid contamination
- Choose the right kit from the start—like our standard & custom hydraulic seal kits
บทสรุป
Hydraulic for power and pressure, pneumatic for precision and speed. Each seal type has a role—choose wisely for maximum efficiency.
Let’s help you match the right seal to your system
📩 Email：[email protected]
📞 WhatsApp：+86 17622979498
Related topic
How to Choose and Replace Hydraulic Seals
High-Performance Pneumatic Seal Guide
How to Extend the Lifespan of Pneumatic Seals
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