Science and Technology, Environment Science
Types of non-metallic industrial gaskets

Non-metallic gaskets are widely used in industries where a softer material is suitable to form a tight seal, particularly in low to medium pressure applications. They are typically made from materials that are non-reactive and resilient, making them ideal for various types of piping and equipment in the chemical, water, food, and pharmaceutical industries. Here are some common types:
1. Elastomeric Gaskets
Made from materials like rubber, neoprene, silicone, EPDM (ethylene propylene diene monomer), NBR (nitrile butadiene rubber), and Viton.
Often used in applications requiring flexibility, compressibility, and good chemical resistance.
Commonly used in food and beverage processing, water systems, and low-temperature applications.
2. Compressed Fiber Gaskets
Typically consist of fibers (such as aramid, fiberglass, or carbon) bound with a resin or rubber binder.
Can handle moderate pressure and temperature ranges.
Often used in general-purpose applications, such as water, oils, and mild chemicals, as well as in steam and low-pressure chemical services.
3. PTFE (Polytetrafluoroethylene) Gaskets
Made from PTFE (often referred to by the brand name Teflon), which is highly resistant to chemicals and extreme temperatures.
Ideal for aggressive chemicals and corrosive environments.
Often found in applications where purity is critical, such as pharmaceuticals, food processing, and high-purity gas systems.
4. Graphite Gaskets
Composed of expanded graphite, often reinforced with metal or non-metal inserts for added strength and resilience.
Known for high-temperature resistance and excellent sealing performance in harsh conditions.
Frequently used in applications that involve high temperatures, like steam systems, high-temperature exhausts, and chemical processes.
5. Mica Gaskets
Made from mica materials, often used in combination with other materials.
Known for high heat and chemical resistance.
Suitable for very high-temperature applications, such as those found in the power generation and petrochemical industries.
6. Ceramic Fiber Gaskets
Composed of ceramic fibers, offering extreme temperature resistance.
Ideal for high-temperature applications, particularly in furnaces and other heat-intensive equipment.
Often used in industries like power generation, oil and gas, and steel manufacturing.
7. Cork Gaskets
Made from natural cork mixed with elastomeric binders to enhance flexibility and resilience.
Used in applications requiring a softer material that can compress easily to form a seal.
Common in automotive, refrigeration, and general-purpose sealing applications where low compression force is required.
8. Paper and Cellulose Fiber Gaskets
Made from cellulose or paper fibers, often used in lightweight, low-pressure applications.
Typically found in applications with light fluids, like water, oils, and fuels.
Commonly used in automotive and light-duty machinery.
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