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Liquid and Oil Filter Elements That Reduce Waste

Harvard Corporation® wants to dry up an ocean of liquid waste through its innovative Constant Contamination Control filters and filtration systems.

Harvard makes four types of liquid and oil filter elements to accommodate a wide variety of equipment requirements and configurations.


  • Water-based
  • Hydraulic
  • Lube
  • Spin-on

Extending the service life of lubricants, coolants, hydraulic oil, and refrigerant oil can eliminate millions of gallons from the waste stream and extend equipment life. Harvard brand filters remove moisture and damaging particles down to a single micron in size. This extra protection helps extend the life of lubricants, engines and equipment while reducing maintenance costs.

Harvard brand filters are state-of-the-art in fluid filtration. They are protected under U.S. patent numbers Pat: 5,486,290; Pat. 6,270,668 B1; Pat: 6,319,416 B2; and other patents pending. Harvard brand filters have a nominal rating of one micron. Oil should be filtered each time it is transferred from one vessel to another because additional contamination is inevitably introduced whenever oil is handled.

Other Oil Filtration Systems