Advantages and Disadvantages of Metal Wound Gaskets

Advantages and Disadvantages of Metal Wound Gaskets

Advantages

Excellent sealing performance: The composite winding of metal strips and flexible fillers features good resilience and high fit, adapting to slight deformation of flange surfaces with no easy leakage even under micro-negative or high pressure conditions.

High temperature and pressure resistance: Temperature resistance up to 650–1000℃ (depending on fillers) and pressure resistance up to 16–100MPa, suitable for the high-temperature and high-pressure working conditions of pyrolysis furnaces.

Medium corrosion resistance: Stainless steel strips combined with graphite/ceramic fiber resist oil vapor, acids, alkalis and sulfides, adapting to the sulfur/oil-containing atmosphere of pyrolysis.

High versatility: Complete standard specifications with customizable sizes, suitable for various flanges and easy to install.

Good stability and long service life: Anti-aging and anti-creep properties, with slow attenuation of sealing performance during long-term use, reducing replacement frequency.

Disadvantages

Relatively high cost: More expensive than graphite composite gaskets and ceramic fiber gaskets, with average economic efficiency for small-batch procurement.

High installation requirements: Flange surfaces must be flat and clean with uniform pre-tightening force; otherwise, crushing or local leakage is likely to occur.

Non-reusable: Prone to deformation and resilience failure after disassembly, for one-time use only, leading to relatively high maintenance costs.

Not suitable for frequent opening and closing: Frequent disassembly and assembly may cause metal strip fatigue and sealing failure, making it more suitable for flange furnace doors with infrequent opening and closing