Non-Asbestos Metal Composite Gasket

Features of Non-Asbestos Metal Composite Gasket

• Pressure Resistance: They are designed to withstand high pressure, ensuring a tight seal even under challenging conditions.

• Chemical Resistance: Non-asbestos metal composite gaskets are resistant to a wide range of chemicals, preventing degradation and ensuring longevity.
  

• Durability: The incorporation of metal provides additional strength, making these gaskets highly durable and long-lasting.
  

• Versatility: They can be used in a wide range of applications, from engines and pipelines to machinery and equipment.
  

Applications of Non-Asbestos Metal Composite Gasket

However, they may be more expensive than paper gaskets and may not be necessary for low-stress applications:

• Good liquid medium resistance, superior extrusion resistance and tensile resistance.

• Suitable for most medium or high mechanical stress applications.

• Reinforced by the metal core, the temperature resistance has been significantly improved.

• Easy to reinforced by silicone rubber sealing bead from screen printing process.

  
  

Composite Gasket Types

Rubber-Metal Gaskets: These combine a rubber sealing element (e.g., nitrile, EPDM, or silicone) with a metal core or reinforcement (e.g., steel or aluminum). The rubber provides flexibility and sealing, while the metal adds strength and stability.

Cork-Rubber Gaskets: Made by blending cork with rubber (natural or synthetic). The cork provides compressibility, while the rubber enhances durability and sealing.

Fiber-Reinforced Gaskets: These consist of a fibrous material (e.g., aramid, cellulose, or asbestos-free fibers) bonded with a rubber binder (e.g., NBR, SBR). The fibers provide structural integrity, while the binder ensures flexibility.

PTFE-Based Composite Gaskets: Combine polytetrafluoroethylene (PTFE) with fillers like glass, carbon, or silica to improve strength and reduce creep. PTFE offers excellent chemical resistance.

Graphite-Metal Gaskets: Made by laminating graphite layers with metal (e.g., stainless steel or tanged metal inserts). Graphite provides high-temperature resistance, while metal adds rigidity.

Mica-Based Gaskets: Combine mica (a heat-resistant mineral) with a binder or metal reinforcement. Mica offers excellent thermal stability.

Multi-Layer Steel (MLS) Gaskets: Consist of multiple thin layers of steel (often stainless) with embossed or coated sealing surfaces, sometimes including elastomeric or graphite layers.

Advantages of Using Mica Gaskets

Mica gaskets excel in high-temperature environments, withstanding up to 1000°C (1832°F), making them ideal for applications like exhaust systems and industrial furnaces. Their excellent chemical resistance ensures durability against acids, alkalis, and solvents, while their non-flammable nature enhances safety in fire-prone settings. With low thermal conductivity, they minimize heat transfer, and when reinforced with metal or binders, they offer good compressibility for reliable sealing on irregular surfaces. As an asbestos-free alternative, mica gaskets provide a safe, long-lasting solution with strong mechanical stability, reducing maintenance costs across industries like automotive, aerospace, and power generation.