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Common Industry Terms II

April 2015

The filtration industry uses industry-recognized terminology to communicate various things relative to filters. What type of filter is it? How does it work? What components are included within the filter and what does that tell us? What are the performance levels of the filter itself? These terms help us to understand the characteristics of all filters, regardless of brand.

Here are a few common industry terms relative to filtration.

Baseplate (Tapping Plate)
Typically made of steel or aluminum, this part is threaded to attach the spin-on filter to the filter adapter and to allow fluid to exit the filter. It also includes punched holes to allow fluid to enter the filter.

Seaming Lid
This part joins the canister to the baseplate on a spin-on filter and in some cases holds the sealing gasket in place.

Sealing Gasket
The sealing gasket seals the filter to the filter adapter or to the housing sealing surface. This gasket may or may not be attached to the filter.

Canister
This is the outer shell of a spin-on filter. The canister retains all of the filter components in one unit for ease of installation and removal.

Centertube
This is typically a perforated or louvered tube which forms the center of a filter element to support the media and through which the cleansed fluid returns to the machine.

End Cap
Plastic, metal, paper or a combination, formed to seal the two ends of a filter cartridge or element. Sealing compound is commonly placed in the end caps first, then the media is inserted into the compound. In some instances, the media is directly embedded to the end cap itself.

Media
In various forms, including cellulose, synthetic and blended materials, removes harmful contaminants from the air or fluid.

Compression Spring
This device holds the filter element in position inside the filter housing or canister. Some designs use a coil spring, while others use a leaf spring.

We will include additional terms in future editions of Tech Tips.