AJR Filtration - Who We Are and What We Do

AJR Filtration has grown to become an industry-leading manufacturer of high quality engineered dust and liquid filtration products made in the USA. Our 180,000 square foot facility located in St. Charles, Illinois is at the hub of distribution routes serving the United States, North and South America as well as overseas destinations. Family owned, and celebrating 30 years in business, we take personal pride in superior customer service, and comprehensive technical support. Our goal is to achieve a "Most Valued Supplier" status with every customer.

Family Owned, Second Generation Manufacturer


Fastest Lead Times

Our in-house inventory of standard products and free stocking programs allow AJR to get many products out the same day. Running two production shifts five to six days a week, along with extensive raw material and component inventory, means no down time or delays. Once your order has been placed, it moves directly into production in order to get the product out in three to five days.

Custom Filters

AJR's Engineering and Sales Departments have combined over 30 years' experience in the filtrations industry. With an understanding of your filtration processes and goals, we can design and manufacture a filter solution to meet and exceed your needs. All custom products have an individual part number assigned to them exclusive to your company, and will not be sold to anyone else.

No Hidden Costs – Waived Fees For The Following:

  • Private Labeling
  • Rush Orders 
  • Broken Case Quantities
  • Part Set-ups
  • Standard Samples
  • Stocking Programs


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Product Highlight: AJR Oil Log

Have you been utilizing more bags than normal due to trace oil in your system? Try an oil log to pull out the oil and extend the life of your bag. 

OIL LOG Size 2

•Made of: 100% Polypropylene fiber for maximum oil absorbing capacity

•Our construction: we pack a Spunbond jacket with over half a pound of shredded POMF fiberfill. 
Why? To easily absorb 5 times its weight in oil. 
How? The shredded fibers act like a magnet attracting oil to the log to absorb a maximum capacity.
Benefit? Still maintains a size that can easily fit in a size 2 filter bag.

The AJR oil log is available in two sizes: 
•OIL LOG Size 2

•OIL LOG-CORE-SIZE 2

An oil log is guaranteed to pull more oil than a standard nominal bag can. Consider an AJR oil log today.

For more information please visit our products page, call 630-377-8886, or fill out the contact form below for more information.  

Contact AJR Filtration Today For Your Filtration Solutions!