Hybrid technology breathers with expansion chamber system isolate lubes
from extreme ambient humidity. Ideal for gearboxes and high-humidity or
Ideal for gearboxes and other low flow applications, such as pumps,
bearing houses and storage drums and totes, Hydroguard™ hybrid
breathers offer superior protection and optimize reliability of
lubricants and related machinery.
The patented hybrid design combines the functions of filtration,
desiccant and membrane technology into one cost-effective package to
effectively eliminate ingression of dirt and water through the
A major benefit of the hybrid breather is that lubricants are
virtually isolated from surrounding contaminants. The system “breathes”
yet can withstand driving rain or direct wash-down spray. A diaphragm
allows for expansion and contraction of air within the casing as a
result of temperature variation during steady state operations.
Enclosed filter media protects down to 3µ, while the desiccant stack
prohibits moisture entry.
The Des-Case Hydroguard™ breather handles air volume caused by thermal
expansion and contraction only. The threaded standpipe design can
easily be adapted to any size reservoir opening.
Disposable units are sold in cases of 6 each