Industry’s Filtration Partner
The DEPTH-CLEAR U Series is designed for the removal of carbon particles and low levels of moisture that result from the break down of dielectric oil. Removal of these contaminants increases the dielectric strength and the service life of the oil.

DEPTH-CLEAR U Series is available in three different grades, NA300, NA600 and NA1000. The NA300 is designed to remove particles above 3.0 micron and offers the highest filtration efficiency. The NA300 is commonly used to remove the finely divided carbon particles found in circuit breakers. The more open NA600 and NA1000 are used on heat-degraded oils found in transformers. The NA1000 is the most open of the utility series and provides higher flow rates and lower pressure drops.
Unit of Measure


Media Type

N/A Non-Asbestos

Grade Designation

N/A 300


N/A K Grade


N/A Utility


N/A No Handles

Cartridge Style

N/A 9

Performance Specifications

Differential Pressure @ 140ºF (60ºC)

N/A to 35 psid2.5 bar

Recommended Change-out Pressure

N/A 30 psid2.04 bar

Maximum Operating Temperature

N/A 185 ºF85 ºC

Recommended Flow Rate

N/A 0.5 to 1.0 gpm/ft²20 to 40 lpm/m²

Materials of Construction

Media Material

N/A Cellulose Fibers with Inorganic Filter Aids

End Caps Material

N/A Polypropylene

Cartridge Straps Material

N/A Stainless Steel

Gasket Material

N/A Ethylene Propylene Neoprene Nitrile PTFE Silicone Viton®

Nominal Dimensions


N/A 11 1/8 in28.3 cm


N/A 7 11/16 in19.5 cm

Filter Area

N/A 11 ft²1.0 m²



  • U Series modules provide reliable particle retention and long on-stream life cycles.
  • The proprietary formulation process used to produce the SA Series results in depth media with exceptionally high moisture retention properties.
  • Filter modules are easy to handle and install allowing for quick and easy change-outs.
  • Very high surface area per module results in small space requirements for filter housings.
  • Filter modules are environmentally safe.
  • All SA Series modules are packaged with a desiccant to prevent absorption of moisture prior to use.



  • Transformer Oils
  • Dielectric Oils
  • Hydraulic Fluids
  • Lubrication Oils
  • Turbine Oils
  • Machine Oil
  • Tool Oil
  • Quenching Oils
  • Silicone Oils


N/A Viton and PTFE are registered trademarks of E.I. duPont de Nemours and Company.
Depth-Clear and The Clear Advantage are trademarks of Clarcor, Inc.