Filter Element Store

Not sure whether your compressor needs ISO 32, ISO 46, or ISO 68 oil?

Choosing the wrong viscosity can affect startup performance, lubrication, operating temperature, and overall compressor life. Our latest guide breaks down the differences between the three most common compressor oil grades and explains when each should be used. ISO 46 is the most common choice for rotary screw compressors, but some applications may require ISO 32 for colder conditions or ISO 68 for higher temperatures and heavier-duty service.

Read the full guide:
https://filterelementstore.com/news/compressor-oil-viscosity-guide-iso-32-vs-46-vs-68/

Compressed air filter grades can get confusing fast, especially when trying to compare AO, AA, and AC elements across different systems.

We put together a simple guide explaining common Domnick Hunter coalescing filter grades, typical applications, and where each stage fits in a compressed air system.

✔ AO pre-filtration
✔ AA high-efficiency coalescing
✔ AC activated carbon v***r removal

Read the full guide here:
https://filterelementstore.com/news/domnick-hunter-filter-grades/

Not all hydraulic filters do the same job, and using the wrong type can lead to premature pump wear, valve damage, and contaminated hydraulic fluid.

Pressure filters, return filters, suction strainers, and offline filters all serve different purposes in a hydraulic system, and understanding the difference makes it much easier to match the correct replacement element.

In this guide, we break down:
• Where each filter type belongs
• Typical micron ratings
• What each filter is designed to protect
• Common mistakes when replacing hydraulic filters

If you’ve ever wondered:
“What’s the difference between a pressure filter and return filter?”
We try to make it easy.

Read the full guide here:
https://filterelementstore.com/news/hydraulic-filter-types-explained-pressure-vs-return-vs-suction-filters/

CAGI’s newly released compressed air purity guide explains how particles, water, and oil impact your system and what equipment you need to remove them. https://filterelementstore.com/news/update-for-cagi-compressed-air-purity-guide/

Learn how to choose the correct size of Activated Alumina desiccant for your compressed air dryer.

Activated Alumina Desiccant for Compressed Air Dryers: How to Choose the Right Size Learn how to choose the best size of Activated Alumina desiccant for your compressed air dryer. Over 20 years of desiccant experience.

Do the "Big Box" Stores have expertise with compressor oil?

Buying Compressor Oil from We wonder if the "big box" distributors have expertise with compressor oil. Do they have the correct ISO rating? Find out.

Are compressed air blowdowns a good idea?

Compressed Air Blowdowns - A Good Idea? Are compressed air blowdowns a good idea? Find out the best way to clean up your industrial dust.

Compressed air is one of those hidden costs most facilities don’t think about... until the numbers show up on the energy bill.

Our long-time customer, Tinker Air Force Base, cut their compressed air energy use by 50%, saving about $15,000 per month for a 15-person shop.

Small changes. Big savings.

Read the full story here:
https://filterelementstore.com/news/customer-spotlight-tinker-air-force-base-and-compressed-air-savings/

Thanks to all of our customers for a crazy 2025! This little family business shipped over 80,000 items this year and is thankful for all of you. Stay tuned and enjoy your time off!