Types Of Non Metallic Gaskets

 

Non-metallic gaskets are widely used in various industries to create a seal between two surfaces to prevent leakage of fluids or gases. These gaskets are typically made from non-metal materials such as rubber, elastomers, plastics, and composite materials. Here are some common types of non-metallic gaskets: 1. Rubber Gaskets: - Neoprene Gaskets: Neoprene rubber gaskets are known for their excellent resistance to weather, abrasion, and oils, making them suitable for outdoor and marine applications. - EPDM Gaskets: Ethylene Propylene Diene Monomer (EPDM) gaskets offer good resistance to weather, ozone, and chemicals, making them ideal for use in outdoor and HVAC applications. - Nitrile Gaskets: Nitrile rubber gaskets, also known as Buna-N, are oil-resistant and commonly used in fuel systems and hydraulic applications. 2. Elastomeric Gaskets: - Silicone Gaskets: Silicone rubber gaskets have high-temperature resistance and are often used in food processing, medical, and pharmaceutical applications. - Viton® Gaskets: Viton gaskets provide excellent chemical resistance and are commonly used in chemical processing and petrochemical industries. 3. PTFE (Teflon) Gaskets: - Polytetrafluoroethylene (PTFE) gaskets are non-reactive and offer exceptional chemical resistance, making them suitable for use in corrosive environments. They are commonly used in the chemical and pharmaceutical industries. 4. Non-Asbestos Gaskets: - These gaskets are designed to be a safer alternative to traditional asbestos gaskets. They are made from non-asbestos materials such as aramid fibers, organic fibers, and elastomers. 5. Cork Gaskets: - Cork gaskets are used in applications that require compressibility, resilience, and resistance to oils and solvents, such as in automotive gaskets and certain electrical applications. 6. Felt Gaskets: - Felt gaskets are made from compressed wool fibers and are often used for sealing and lubrication in machinery and mechanical applications. 7. Graphite Gaskets: - Graphite gaskets are known for their high-temperature resistance and excellent sealing properties. They are used in high-temperature and high-pressure applications, including steam and chemical processes. 8. Expanded PTFE (ePTFE) Gaskets: - Expanded PTFE gaskets are made from a modified PTFE material with expanded properties. They offer excellent chemical resistance and conformability, making them suitable for various applications. 9. Sponge and Foam Gaskets: - These gaskets are made from soft materials like silicone sponge or foam rubber and are used in applications where a compressible, low-pressure seal is required. 10. Compressed Fiber Gaskets: - Compressed fiber gaskets, often made from materials like cellulose or aramid fibers, are used in a wide range of applications where resistance to heat and pressure is necessary. 11. Thermoplastic Gaskets: - Thermoplastic gaskets are made from plastic materials that can be softened by heat and molded into shape. They are used in various industries for their resistance to chemicals and temperature. 12. Custom Composite Gaskets: - Some non-metallic gaskets are custom-designed using a combination of materials to meet specific application requirements, such as high-temperature, high-pressure, or chemical resistance. The choice of non-metallic gasket material depends on the specific application's requirements, including the type of fluid or gas being sealed, temperature, pressure, and chemical compatibility. Each type of non-metallic gasket has its own set of properties and characteristics that make it suitable for particular applications. Written by : Sarwaidi. ST.MT