A Review of Ring and Flange Styles for Bag Filters cover image

A Review of Ring and Flange Styles for Bag Filters

Kaitlyn ColliganKaitlyn Colligan avatar

Kaitlyn Colligan

4 minute read

Bag filters are an essential component of industrial filtration systems, effectively capturing contaminants and ensuring the purity of fluids. As crucial as the filter media itself is, the selection of the appropriate ring and flange style greatly influences the performance, ease of installation, and overall efficiency of bag filters. Whether you are new to bag filters or seeking to optimize your filtration system, understanding these styles will help you make informed decisions and achieve optimal results. Join us as we review the various ring and flange options available, guiding you towards selecting the perfect fit for your industrial filtration needs.

What is a Flange?

A flange is a specially designed component used in bag filtration systems to securely connect the filter bag to the filter housing. It acts as a sealing interface, ensuring that the process fluid passes through the filter media and prevents any bypassing. Flanges are typically circular in shape and it provides a reliable attachment point for filter bags, allowing for easy maintenance, replacement, and optimal filtration performance.

What is a Ring?

A bag filter ring is a component used in bag filtration systems to provide structural support and secure attachment between the filter bag and the filter housing. Typically made of durable metals such as stainless steel or carbon steel, the metal ring is designed to withstand high temperatures, pressures, and harsh operating conditions. The ring is inserted or sewn into the fabric of the bag, forming a rigid structure that ensures proper alignment and positioning. This metal ring provides stability and prevents the bag from collapsing or distorting during filtration. It enhances the filtration efficiency by maintaining a consistent seal between the bag and the housing, minimizing the risk of bypass and ensuring all fluid or gas passes through the filter media. The bag filter ring is an essential component for reliable and effective filtration in industrial applications.

Types of Rings and Flanges

Galvanized Steel Ring

The galvanized steel ring is a popular choice for bag filters due to its durability and strength. Its corrosion-resistant properties make it suitable for a variety of applications, including industrial processes with high temperatures and challenging environments. The galvanized steel ring provides reliable support and ensures a secure fit for the filter bag, maximizing filtration efficiency.

Stainless Steel Ring

Stainless steel rings offer excellent resistance to corrosion, ensuring durability and longevity in demanding filtration applications. They are particularly well-suited for industrial processes that involve aggressive chemicals or high temperatures. With their robust construction, stainless steel rings provide reliable support and help maintain a tight seal during filtration operations.

Polypropylene Ring

Polypropylene rings are lightweight, cost-effective, and chemically resistant. These rings are ideal for applications where corrosion is a concern but stainless steel is not required. Polypropylene rings offer sufficient strength and stability while reducing overall system weight.

They provide compatibility with a wide range of fluids and offer cost-effective solutions for various filtration needs.

Polypropylene Flange

Polypropylene flanges are known for their excellent chemical resistance. These flanges offer easy installation and provide a secure seal between the bag filter and the housing. With their lightweight yet robust construction, polypropylene flanges are suitable for applications where chemical compatibility and ease of installation are important factors.

Choosing a Style

When choosing the appropriate ring or flange style for your bag filters, consider factors such as:


Evaluate the specific industry requirements and environmental conditions to select the most suitable material with the proper corrosion resistance.

Chemical Compatibility

Determine the chemical compatibility of the ring or flange material with the process fluids to ensure optimal performance and longevity.

Installation and Maintenance

Assess ease of installation and maintenance requirements, as some styles may offer quicker and more straightforward installation processes.


Consider your budget constraints and select a ring or flange style that balances cost-effectiveness and long-term value.

At Filtersource.com, we offer a comprehensive range of bag filters with various ring and flange options to meet your specific filtration needs. Our team of experts is dedicated to helping you choose the right style that aligns with your application requirements, ensuring optimal performance and trouble-free filtration operations.

Contact Filtersource.com today to explore our complete range of bag filters and ring/flange styles. Benefit from our commitment to quality, durability, and customer satisfaction to enhance your industrial filtration processes. Get a quote today!

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