Filter Bags

Overview of Aramid

When it comes to high-performance materials, the choices are vast. Two of the most popular materials for filtration are Aramid and Ryton. Not only do they have many uses, but they also offer different advantages and disadvantages. Aramid is a synthetic fibre known for its strength and heat resistance, while Ryton is a thermoplastic with excellent chemical resistance and electrical properties. In this article, we’ll compare Aramid and Ryton to help you decide which is best for your needs. We’ll consider each fabric’s properties, applications, strengths and weaknesses and help you determine which material suits your next filtration project.


Filter fabrics can be made from various materials, but two of the most commonly used materials are Aramid and Ryton. Aramid is a man-made fibre that is lightweight, heat resistant, and strong, making it ideal for use in filtration media. Conversely, Ryton is a polyphenylene sulfide (PPS) resin-based plastic with superior chemical, thermal, and electrical properties. Both materials offer excellent durability, but their chemical and mechanical properties vary.

Aramid has a higher melting point than Ryton, making it a better choice for high-temperature applications. It is also less prone to chemical attack than Ryton and has superior heat stability and resistivity. Regarding mechanical properties, Aramid is more resistant to abrasion than Ryton. It also has a better tensile strength, making it a better choice for applications requiring stability and strength.

Ryton, however, has superior chemical properties. It is more resistant to chemicals and solvents, making it a better choice for applications where chemical resistance is important. It is also more electrically conductive than Aramid, making it a better choice for electrostatic applications. In terms of mechanical properties, Ryton is more resistant to impact and fatigue than Aramid, making it a better choice for applications requiring impact and fatigue resistance.

Overall, Aramid and Ryton are both excellent choices for filter fabrics. Aramid is better for high-temperature and strength requirements, while Ryton is better for applications requiring chemical resistance, electrical conductivity, and impact and fatigue resistance.


Filter fabrics made of Aramid or Ryton are used in various applications. Aramid is a synthetic fibre that is very strong and durable, making it ideal for use in filter bags, dust filter sleeves, and filter media. It is also used in protective clothing and aerospace parts. On the other hand, Ryton is made of a combination of polyphenylene sulfide, polyester, and Aramid. Ryton is designed to be resistant to hydrolysis, corrosion, and oxidation. It is often used in filter cartridges, replacement filter cartridges, and filter liners.

Aramid is a suitable filter fabric for applications that require greater strength and durability, such as in dust collection systems, dust filtration bags, and filter sleeves. It is also used in the aerospace industry for components such as fuel lines, fuel tanks, and jet engines. Ryton is more resistant to high temperatures and is thus often used in industrial filtration, such as replacement filter cartridges, filter liners, and high-temperature filter systems.

Aramid and Ryton filters can be used in both commercial and industrial settings. Aramid is frequently used in applications such as automotive filtration, water filtration, and air filters. Ryton is also widely used in air filtration systems, such as those found in household and automotive air systems. In addition, Ryton can be used in industrial settings, such as wastewater treatment systems and petrochemical plants.

Overall, Aramid and Ryton filter fabrics offer a variety of uses and benefits. They are strong, durable, and can withstand high temperatures, making them ideal for industrial and commercial settings.

Characteristics of Aramid

Filter fabrics play a critical role in the performance of filtration systems, and Aramid and Ryton are two materials used for this purpose. Aramid is a synthetic polymer material composed of several aromatic polymer chains. It is produced by spinning extremely thin strands of synthetic fibre, which are then woven into a fabric. Aramid is a strong, durable, and heat-resistant material, making it ideal for making filter fabrics.

The fibres used to make aramid filter fabrics have a low coefficient of friction, meaning they offer minimal drag, allowing for better airflow and efficient filtration performance. Aramid fibres are also very resilient and durable and can withstand high temperatures without breaking down. The material is also resistant to most acids and alkalis, making it suitable for use in a variety of applications.

Ryton is a synthetic, semi-crystalline polymer material derived from petroleum chemicals. Unlike Aramid, Ryton is not a fabric but a moulded plastic. The material has a high tensile strength, making it suitable for filter media and heat resistance. The material is also resistant to most chemicals, making it suitable for use in a variety of industrial applications.

Both Aramid and Ryton filter fabrics can offer superior filtration performance, but each has strengths. Aramid offers superior heat resistance, durability, and resilience, while Ryton offers superior chemical resistance. The best choice for a particular application will depend on various factors, including the specific needs of the application.

Applications of Aramid

Aramid, polyaramid or polyamide is a group of synthetic polymers used in filter fabrics and other industrial applications. Aramid fabrics are known for their high strength and good flame resistance, making them an ideal choice for various industrial applications. They are often used for air and liquid filtration, general mechanical protection and insulation applications. Due to their strength, heat resistance, and flame-retardant properties, aramids are commonly used as filter fabrics in both residential and commercial HVAC systems.

Aramid filter fabrics are typically made from a blend of multiple aramid fibres, including Aramids, Kevlar, and Nomex. These fabrics are known for remaining strong and durable even at temperatures up to 1500°F (816°C). The air permeability of aramid filters is also higher than that of other synthetic materials, making them ideal for applications with high levels of air filtration.

Compared to other synthetic filter fabrics, such as Ryton (Polyphenylene Sulphide or PPS), aramids offer higher levels of thermal stability, better chemical and flame resistance, and better filtration performance. They are also relatively lightweight, making them easy to handle, install, and maintain.

Aramid filters are used in various applications, including air and liquid filtration in industrial and commercial HVAC systems, dust and fume extraction, and gas turbine intakes. They are also used for dust cloths, dust and fume filters, insulation, protection from heat and fire, and in the aerospace and automotive industries.

Overview of Ryton

Ryton is a high-performance filter fabric that has become increasingly popular due to its excellent durability and chemical resistance. It is a polyphenylene sulfide (PPS) fibre produced from PPS resin and composed of continuous filaments. The strong, heat-resistant filaments provide greater tensile strength and chemical resistance than conventional fibres. Ryton is an ideal choice for filter applications that require high performance and durability while remaining lightweight and cost-effective.

Ryton is especially suitable for filter products with abrasive and corrosive elements due to its excellent resistance to high temperatures and harsh chemicals. This makes it ideal for various filter applications, including air and liquid filtration, oil and gas separations, and dust collection. Ryton can also be used in food processing and pharmaceutical manufacturing. It is also a material of choice for high-performance filter bags, cartridge filters, and filter media.

Ryton is also non-flammable, easy to clean, and has excellent tensile strength. It maintains its dimensional stability and low-pressure drop properties under a wide range of operating conditions. Ryton is an extremely versatile material that is a great choice for filter fabric in various extreme applications.

The two filter fabrics offer similar performance and durability when comparing Ryton to Aramid. However, Ryton is typically more cost-effective and offers improved resistance to harsh chemicals and high temperatures. Its non-flammable properties and excellent tensile also make it an ideal choice for filter applications in extreme environments. In conclusion, Ryton is a great choice for filter fabric in a variety of applications due to its excellent performance and cost-effectiveness.


Filter fabrics are essential in various applications, from automatic transmission fluid filters to respirators. The fabrics must withstand high pressure and temperature while still exhibiting an acceptable level of filtration performance. Aramid and Ryton are two filter fabrics commonly used due to their unique properties.

Aramid filter fabrics are known for their excellent strength and durability. They are composed of resilient, synthetic fibres that can withstand extreme temperatures and pressures without breaking down. Aramid fibres are also naturally resistant to oils and chemicals, making them a good choice for chemical processing applications. Additionally, Aramid fabrics are highly flame-retardant, making them an excellent choice for high-power applications.

On the other hand, Ryton filter fabrics are composed of polyphenylene sulfide (PPS) fibres. These fibres offer superior strength and chemical resistance, making them suitable for a wide range of applications. Ryton fabrics are also known for maintaining constant filtration efficiency at high temperatures. They are often used in chemical processing applications that require reliable filtration performance in demanding environments.

Aramid and Ryton fabrics both offer excellent filtration performance and chemical resistance. However, each fabric has different strengths and weaknesses. The choice between the fabrics often comes down to the specific application requirements. Therefore, it is important to weigh the unique properties of both Aramid and Ryton fabrics when selecting a filter fabric for a specific application.


Filter fabrics from Aramid and Ryton materials are used in industrial and commercial applications. The most common uses are in air and liquid filtration, including high-performance filters used in medical, food and beverage, and industrial manufacturing. Aramid and Ryton filter fabrics are often used in air and liquid filtration systems to remove contaminates, such as dust and dirt, from the air and liquid streams. They can also be used in protective clothing applications, such as respirator masks and protective suits.

Due to their superior strength and longevity, aramid filter fabrics are often used in high-efficiency air filters for automobiles and industrial air filtration systems. They are also used as secondary fuel filters in aerospace and automotive applications and oil and gas filtration systems.

Ryton filter fabrics have many of the same advantages as Aramid. They are highly durable and resistant to most types of chemical attacks. Additionally, Ryton filter fabrics are often used in fuel and hydraulic fluid filtration systems because their low permeability makes them highly effective at blocking particulates. They are also used as pre-filters in air-conditioning systems.

Aramid and Ryton filter fabrics are among the most popular filters and protective clothing materials due to their superior strength and longevity. Both materials are highly durable and resistant to most chemical attacks, making them a reliable option for many industrial and commercial applications.

Characteristics of Ryton

Ryton is a thermoplastic polyester that has a wide range of end uses, including filter fabrics. It is known for its high-temperature performance, chemical inertness, and oil and grease resistance. Compared to other materials, including Aramid, Ryton has some distinct characteristics that make it an ideal choice for filter fabric applications.

Ryton has various properties, including good mechanical toughness, strength and dimensional stability, and excellent electrical and thermal insulation. It displays low water absorption and good dimensional stability, even when exposed to temperatures up to 200°C. Ryton also has a low coefficient of friction, which is ideal for applications involving moving parts. Ryton has a wide range of chemical compatibility, making it highly resistant to hydrocarbons, acids, and bases.

Ryton is also available in a wide range of grades, making it highly adaptable to specific filter fabric needs. Grades of Ryton can be tailored to provide the desired properties, such as flexibility, chemical resistance, and abrasion resistance.

When considering a filter fabric, it is important to consider the characteristics of the material that will best suit the application. Ryton provides a range of characteristics that make it an excellent choice for filter fabric applications. With its thermal stability, low coefficient of friction, and chemical resistance, Ryton is an ideal material for a range of filter fabric applications.

Applications of Ryton

Ryton is a filter fabric made from a synthetic polymer blend and is a newer alternative to the traditionally used aramid fabrics. It is well suited for air and liquid filtration due to its superior dust-holding capacity and high abrasion resistance. Introducing a thermal stabilization process enhances the strength and flexibility of Ryton. Ryton filter fabrics are also easy to fabricate, making them ideal for filter applications.

Ryton filter fabrics are manufactured using a proprietary polymer blend containing PPS (polyphenylene sulfide) resin and high-capacity activated carbon. This unique combination of materials makes Ryton fabrics particularly suitable for liquid filtration. Ryton fabrics are strong and rigid, with high tear and tensile properties, while retaining an excellent dust-holding capacity. The fabric is also resistant to fire and a wide range of chemicals, making Ryton filter fabrics suitable for applications in hazardous environments.

Ryton filter fabrics have an exceptional surface area, which, combined with their superior dust-holding capacity, makes them optimal for air filtration. Ryton fabrics also offer excellent resistance to abrasive particles, making them especially suitable for applications such as metal surface filtration and filtration of particulates in wastewater. Ryton fabrics show excellent performance in high and low temperatures, making them suitable for a variety of filtration applications in both indoor and outdoor environments.

In summary, Ryton is a filter fabric made from a unique combination of materials. Ryton filter fabrics offer superior dust-holding capacity, high abrasion resistance, and excellent resistance to fire and chemicals. This makes it ideal for air and liquid filtration applications and uses in hazardous environments. Additionally, Ryton fabrics are easy to fabricate, making them a cost-effective solution for a variety of filtration needs.

Comparison of Aramid and Ryton

There are many to choose from when it comes to filtering fabric materials. Aramid and Ryton are the more popular filter fabrics, offering unique advantages when used in high-performance filtration applications. Below, we will compare Aramid and Ryton filter fabrics to determine the best suited for a specific application.

Aramid is a synthetic, manufactured material that is extremely strong and lightweight. It has high thermal stability and resistance to chemicals and moisture, making it ideal for use in many high-performance filtration applications. It also offers excellent resistance to tearing and abrasion, making it more durable than other fabrics. Aramid also has a low thermal conductivity, meaning it can provide excellent insulation properties.

Ryton is another synthetic, man-made material that is also strong and lightweight. It also features excellent thermal stability and resistance to chemicals and moisture, making it ideal for many high-performance filtration applications. Ryton also offers good resistance to tearing and abrasion and has low thermal conductivity, making it a good choice for insulation.

When comparing Aramid and Ryton filter fabrics, it is important to consider their respective advantages. Aramid is more durable than Ryton, making it better suited for highly protected applications. Ryton is lighter than Aramid, making it more suitable for applications requiring less weight and greater portability. Additionally, Ryton is slightly more resistant to chemicals, whereas Aramid is more resistant to moisture.

When selecting a filter fabric, it is important to consider the properties and characteristics of Aramid and Ryton to determine which is best suited for a particular application. Aramid is more durable and provides excellent protection, while Ryton is lightweight and offers good chemical resistance. Ultimately, the choice of filter material will depend on the specific application and the desired performance.


High-performance filters require filter fabrics that are strong and rigid yet still flexible enough to perform certain tasks effectively. When selecting filter fabrics for these applications, two top contenders are Aramid and Ryton.

Aramid is a synthetic material renowned for its strength and lightweight properties. Its fibres are woven together for excellent tensile strength and flexibility, making it an optimal choice for filter fabrics. Aramid is known to withstand high-temperature applications, making it suitable for hot fluids filtration processes. It is also resistant to oil, acid, and alkali while retaining its shape even when exposed to extreme temperatures.

Ryton is a strong yet flexible material loved for its durability and cost efficiency. Ryton offers excellent filtration performance for filter fabrics that can withstand even the most abrasive particles. Its superior strength and rigidity make it an excellent barrier against large-sized particles. Additionally, Ryton is flame resistant to many chemicals, helping extend the filters’ lifespan.

Ultimately, Aramid and Ryton provide excellent strength and stiffness for filter fabrics, making them both suitable choices. While each material has its unique benefits and drawbacks, using either depends heavily on the application and specific filter requirements.

Heat Resistance

Filter fabrics are materials used to protect equipment and other objects from dust, dirt and other airborne particles. They are used in various industries, from automotive to industrial. Two of the most popular filter fabrics used in a variety of applications are Aramid and Ryton. Both filter fabrics are highly effective at protecting objects from airborne particles and have a variety of benefits when compared to other types of filter materials. One of the most important benefits of these filter materials is their ability to resist heat and fire.

Aramid filter fabrics are highly resistant to heat and fire due to their special blend of synthetic fibres. These fibres are extremely strong and can withstand temperatures over 500°F. Aramid fabric is flame-resistant, which means it will not catch fire if exposed to extreme heat or fire. It can also withstand high friction levels, making it an ideal choice for high-temperature applications.

Ryton filter fabrics are also highly resistant to heat and fire. This type of filter fabric is made from polyphenylene sulfide (PPS) fibres, which are incredibly strong and durable. This filter fabric can withstand temperatures up to 490°F and is also flame-resistant. It has excellent tensile strength and can withstand high levels of friction and wear.

Aramid and Ryton filter fabrics are highly resistant to heat and fire, making them an ideal choice for various applications. They have excellent tensile strength and can withstand high levels of friction and wear. They are also flame resistant, making them ideal for high-temperature applications.

Chemical Resistance

Chemical resistance is an important consideration when considering the selection of filter fabrics. It affects a filter’s service life and indicates its ability to withstand harsh chemicals or caustic cleaning agents. Of the two materials used in filter fabrics, Aramid and Ryton, Aramid offers superior chemical resistance.

Aramid is designed to be highly resistant to most acids, alkalis, and solvents. This makes it ideal for filters that withstand harsh chemicals or cleaning agents. Furthermore, Aramid is resistant to abrasion, wear, and tear, which can reduce the service life of a filter.

Ryton, on the other hand, is not as resistant to chemical attacks as Aramid. It is resistant to some acids but not as resistant to alkalis or solvents. It is also more prone to wear and tear than Aramid, leading to a shorter service life for a filter.

In conclusion, Aramid is more suited for filters that require superior chemical resistance. Ryton is more cost-effective but does not provide the same level of chemical resistance, wear resistance and service life as Aramid.

High-Temperature Performance

A key factor to consider when choosing a high-performance filter fabric is its temperate performance. Temperature affects the performance of any filter, and the right fabric will keep a filter running smoothly even at higher temperatures. Comparing the two most common high-performance filter fabrics – Aramid and Ryton – is essential to making the right choice.

Aramid fabrics are heat-resistant, melting at 480°C (896°F). In addition, they are mechanically strong, with high tensile strength and stiffness. This makes them an ideal choice for high-temperature operations, as they will retain their shape and strength even at higher temperatures. Aramid fabrics also resist chemical breakdowns, making them an effective filter in hostile environments.

Ryton, a polyphenylene sulfide (PPS) based fabric, is also effective for high-temperature operations. It has outstanding chemical and thermal stability, withstanding temperatures up to 200°C (392°F). Ryton is also very durable and lightweight, making it highly efficient in mass efficiency. It is also resistant to chemical attack, making it an ideal choice for high-temperature applications.

When choosing a high-performance filter fabric, weighing the advantages and disadvantages of both aramid and Ryton fabrics is important. Aramid fabrics are very heat-resistant but are more expensive, heavier, and less chemically resistant than Ryton. On the other hand, Ryton is lightweight, relatively inexpensive, and chemical resistant, but its temperature tolerance is slightly lower than that of Aramid. Ultimately, the most suitable option will depend on the specific requirements and budget of the application.

Electrical Properties

When discussing the electrical properties of Filter Fabrics, Aramid and Ryton offer important differences. Aramid is an organic fibre that can resist electrical charges. As such, it is a great choice for those looking for an effective filter material for electrical insulation. It is also highly durable and able to withstand high temperatures.

Ryton, on the other hand, is a semi-synthetic plastic resin with excellent electrical properties. It is highly resistant to heat, chemicals, and mechanical fatigue. It is also a great choice for those looking for an excellent electrical insulation material, as it can resist electrical charges and prevent them from penetrating it. In terms of electrical resistance, Ryton has a higher resistance than Aramid. This makes Ryton a better choice for those seeking an effective filter material for current-carrying applications. Ryton is also less fragile than Aramid, which can withstand higher temperatures and be more damage-resistant. Finally, Ryton has better dielectric strength than Aramid, making it an effective insulator and an excellent filter choice. Dielectric strength measures the ability of a material to resist electrical current, and Ryton has a higher dielectric strength than Aramid.

Both Filter Fabrics, Aramid and Ryton, offer excellent electrical properties. Aramid is an organic fibre with excellent electrical insulation, while Ryton is a semi-synthetic plastic resin with a higher resistance, dielectric strength, and heat resistance. As such, it is up to the user to decide which material is best suited for their needs.


Regarding the cost of filter fabrics, Aramid and Ryton are both affordable options. Both offer high-performance filtration at a reasonable price and have comparable performance levels. Aramid is generally more expensive than Ryton and is usually priced per square metre. It ranges from about €3-4 per square metre, though it can go up to €5-6 depending on the quality and quantity. Additionally, Aramid is available in different weights and lengths so the price may vary according to the specifications.

On the other hand, Ryton is more cost-effective than Aramid and usually priced in kilograms. It typically costs between €2-3 per kilogram, though it can be less depending on the quantity and quality, and it is available in different lengths and weights. Additionally, compared to Aramid fabric, Ryton is often available in rolls, making transporting and storing easier and more cost-efficient.

Regarding pricing, Aramid and Ryton are comparable options and offer good value for money. However, regarding bulk orders, Ryton is typically more cost-effective and may be a better choice for those on a budget. Ultimately, the choice between Aramid and Ryton depends on the individual project requirements and budget.

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