Donaldson Endurance™ Air Filters with
exclusive nanofiber technology offer longer engine life, longer
filter life, initial efficiency up to 99.99 percent and five
times more capacity.
The nanofiber technology causes submicron
contaminants to be held on the surface layer of smaller fibers.
This filtration characteristic is only possible with this new
type of air filtration technology. In on-highway applications,
where the contaminant is primarily submicron in size, Donaldson
Endurance filters cause less restriction than conventional
filters with cellulose media. The smaller interfiber spaces of
nanofiber technology have a higher efficiency and capture more
contaminant.
The following illustration may help visualize
these phenomena: Imagine two filters, a chain link fence and a
mosquito net, with a tennis ball being a dirt particle. As you
may have observed, a tennis ball will fit quite nicely into an
opening of a chain link fence, but will obstruct the hole almost
100%. Now imaging the same tennis ball covering a mosquito net.
The tennis ball, at the point of contact with the netting, will
obstruct much less filter area than the chain link fence example.
In fact, air will flow around the tennis ball all the way to the
point of contact. It will take many more particles to obstruct
the netting surface area than the chain link fence.
Donaldson Endurance™ air filters are
guaranteed to deliver twice the miles between change intervals
over cellulose air filters for on-highway applications or
customers receive a new filter at no charge.
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