Advantages and Operating Instructions for Metal Bellow Mechanical Seals

I. Core Advantages (Compared with Conventional Spring Seals)

1. Excellent Adaptability to High & Low Temperatures

• No vulnerable components prone to failure under extreme temperatures

• Stable performance in high-temperature, low-temperature and fluctuating temperature conditions

2. Superior Axial Flexibility & Compensation Ability

• Metal bellows act as both elastic element and secondary seal

• Effectively compensates for shaft runout, axial movement and installation misalignment

3. No Clogging & Long Service Life

• No small springs that may get stuck by particles, crystals or viscous media

• Reduces frequent maintenance and replacement

4. Strong Corrosion Resistance

• Made of high-grade alloys (Hastelloy, Inconel, stainless steel, etc.)

• Suitable for corrosive, toxic and hazardous media

5. Zero Leakage & High Reliability

• Integral welded structure minimizes leakage points

• Ideal for flammable, explosive and environmentally sensitive fluids

6. Wide Pressure & Speed Range

• Performs well in high-pressure and high-speed working conditions

• Maintains stable sealing under variable working loads

II. Operating Instructions

1. Installation Requirements

• Keep sealing surfaces clean and scratch-free

• Ensure concentricity of shaft and sealing cavity

• Tighten fasteners evenly to avoid distortion

2. Media Compatibility

• Select appropriate bellows material according to medium properties, temperature and concentration

• Not recommended for media causing severe erosion or rapid crystallization

3. Start-Up & Operation

• Run-in at low speed and pressure before full operation

• Avoid dry running, which may cause overheating and damage

• Maintain stable lubrication and cooling conditions

4. Maintenance & Inspection

• Regularly check for leaks, abnormal noise or vibration

• Inspect bellows for cracks, deformation or fatigue damage

• Replace worn sealing faces and gaskets in a timely manner

5. Storage Conditions

• Store in dry, dust-free environment away from direct sunlight

• Prevent collision or compression that may deform the bellows