Cellulose to Glass Upgrades

There are several distinct differences between glass and cellulose elements & media selection should be based on the required cleanliness and other unique needs of the system.

Normally, wire mesh and cellulose media elements are ‘nominally’ rated, which means they might be only 50% efficient at the rated micron size. Most glass media elements are considered ‘absolute’ rated which means that they are 99.5% efficient at the rated micron size.

Check Beta ratio before selecting the media as all “10 micron” filter elements do not filter with the same efficiency. Glass media has superior fluid compatibility versus cellulose with hydraulic fluids, synthetics, solvents, and high water-based fluids.

Absolute rated high-efficiency glass media elements are the most suitable selection for achieving target ISO cleanliness codes on systems with components that are sensitive to contamination (servo valves, piston pumps, etc)

Upgrading cellulose to glass will remove years of accumulated fine particles & reduce the element life span whilst the system is cleaned – once the system is clean the glass element can last up to 4 – 5 times longer than the cellulose element that was upgraded.

Cellulose Media Efficiency

Cellulose media elements have a nominal efficiency of 50%

Comparison of Glass & Cellulose Dirt Hold Capacity

Glass elements can last up to 4 – 5 times longer than cellulose elements.

Glass Media Efficiency

Glass media elements have an absolute efficiency of 99.5%

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M&R Hydraulics Ltd

Units 11 & 13 Telford Road
Ellesmere Port
South Wirral
CH65 5EU

Telephone: 0151 357 1901


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