Circular Brush Seal
Our circular brush seal uses high-density alloy bristles instead of hard metal-to-metal contact. The bristles gently touch the rotor surface, creating a near-zero gap during operation. This drastically reduces steam leakage, improving efficiency and stability. Since 2013, we’ve completed over 200 successful installations in China, proving its performance and reliability.
- Product Introduction
Technical Parameters
|
Parameter |
Value |
|
Product Name |
Circular Brush Seal |
|
Brush Material |
Cobalt-based alloy / Nickel-based superalloy (GH4169 / Stellite 6) |
|
Brush Wire Diameter |
0.05 – 0.12 mm |
|
Brush Wire Density |
80 – 120 bristles/mm² (90 – 180 bristles/mm circumferentially) |
|
Operating Temperature |
-50°C – 650°C |
|
Operating Pressure Difference |
≤ 12 MPa |
|
Surface Linear Speed |
≤ 150 m/s |
|
Leakage Rate |
1/5 – 1/10 of traditional labyrinth seal (60% – 90% reduction) |
|
Service Life |
≥ 48,000 hours continuous operation |
|
Key Advantages |
Flexible sealing, anti-rub, 10% – 20% vibration reduction, energy saving |
Why Choose Our Circular Brush Seal?
1. Flexible Contact for Near-Zero Leakage
Our circular brush seal uses high-density alloy bristles instead of hard metal-to-metal contact. The bristles gently touch the rotor surface, creating a near-zero gap during operation. This drastically reduces steam leakage, improving efficiency and stability. Since 2013, we've completed over 200 successful installations in China, proving its performance and reliability.
2. Bristles Move Automatically to Avoid Damage
Traditional seals wear out quickly, causing gaps to widen and steam to escape. Our flexible bristles bend away when the rotor moves or expands from heat, preventing shaft grinding. This "flexible damping seal" principle ensures safety while maintaining minimal leakage. Many power plant clients report measurable improvements in cylinder efficiency after installation. Fewer complaints and higher repeat orders are a natural result.
3. Built for Tough Conditions and Long Life
The circular brush seal withstands extreme temperatures (-50°C to 650°C) and high-pressure differences (up to 12 MPa). With a bristle density of 80–120 bristles/mm², it blocks steam flow efficiently. Leakage is reduced by 60%–90% compared to traditional labyrinth seals, and the seal can run continuously for over 48,000 hours. Our high-tech company holds 100+ patents and provides on-site measurement and installation guidance.
FAQ
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