Triple Flexible Seal

The Triple Flexible Seal features three independent elastic mechanisms: radial pressing, axial cushioning, and circumferential following. The seal strip uses a cantilever structure that behaves like a spring leaf, moving in all directions. Whichever way the rotor shifts—radially, axially, or circumferentially—the strip follows precisely, ensuring optimal sealing under all conditions.

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Product Introduction

Technical Parameters

Parameter	Value
Product Name	Triple Flexible Seal
Applicable Equipment	Rotary air preheater
Operating Temperature	-20°C – 480°C
Seal Strip Thickness	1.0 – 2.5 mm
Radial Compensation Stroke	12 – 45 mm
Axial Compensation Stroke	4 – 18 mm
Circumferential Adaptive Angle	±3°
Seal Face Specific Pressure	60 – 180 Pa
Leakage Reduction	45% – 70%
Continuous Service Life	4 – 6 years

Key Advantages

1. Three-Way Movement for Perfect Following

The Triple Flexible Seal features three independent elastic mechanisms: radial pressing, axial cushioning, and circumferential following. The seal strip uses a cantilever structure that behaves like a spring leaf, moving in all directions. Whichever way the rotor shifts-radially, axially, or circumferentially-the strip follows precisely, ensuring optimal sealing under all conditions.

2. Full-Contact Seal at All Times

Leakage is reduced by 45%–70% thanks to continuous full-contact sealing. The soft-contact design ensures the seal strip touches the sector plate without causing wear, even under thermal deformation or mechanical runout. This makes it ideal for large-diameter, high-parameter rotary air preheaters where conventional seals fail.

3. Durable, Long-Life Elastic Components

High-temperature spring steel is used for all elastic components, providing excellent fatigue resistance. The Triple Flexible Seal can be fully customized to match your customer's specific rotor deformation requirements. Our company provides full design, production, and installation support. With over 100 supporting patents, this seal is built for the toughest preheater leakage problems.