mechanic 73 1




SELEE Corporation is a technical materials company specializing in the design and manufacture of porous ceramics for a wide range of demanding industrial applications.  Scroll down this page to find the best filter for your application.



CS-X® is a patented filter formulation offering significant benefits in performance, worker safety, and enviromental impact.

– View More


  • CS-T™ exclusively developed for Lithium Aluminum alloys

  • More stable filter-metal interface resulting in better inclusion adhesion

  • Significant reduction in filter-metal reaction and associated inclusion releases

Contact Us for Information →


Aluminum Foundry 1


SELEE® filters are preferred by aluminum foundries due to their superior dimensional control, resulting in optimal mold fit and reduced risk of metal bypass.

Whether your foundry produces standard aluminum castings or critical, complex, thin-wall aerospace castings, we have the optimal filter for your application.

These filters are pecision cut after firing to the tightest dimensional tolerences including the cut sides have the desirable open-pore structure of true ceramic foam.

The superior dimensional tolerances of SELEE® filters for aluminum filtration are recognizable at first glance.  These filters are precision cut after firing to the tightest dimensional tolerances in the world.  All surfaces, including the cut sides, have the desirable open-pore structure of true ceramic foam.

Learn More →

Steel foundry 1


Zirconia PRZ Filter

To meet the demanding requirements of steel foundries, SELEE Corporation recommends our Zirconia (PRZ) filter.

Our PRZ filters are formulated of a magnesia-stabilized zirconia, the perfect composition for filtering steel grades from carbon to stainless.

There are many benefits to the steel foundry customer including fewer reoxidation and subsurface defects and a higher casting yield.  They are highly thermal shock resistant, a must for the steel foundry.

Learn More →

Iron foundry 2



The high internal surface area of SELEE filters makes for a deep-bed filtration effect throughout the thickness of the filter.  Through deep-bed filtration, even highly fluid slag is retained in the foam network, significantly reducing scrap and machining.  SELEE produces filters in a wide variety of sizes and in several thicknesses and pore sizes to meet the filtration requirements of grey and ductile iron foundries.

Learn More →

Copper Filtration Group


Reduced Break Frequency:  Casting filtered metal has proven to reduce wire and rod breakage by up to 35%.

Reduced Incidence of Nozzle Blockage:  Using filters in launder and/or tundish removes inclusion material, dramatically reduces nozzle blockage and increases production run.

Reduction of Scrap Related to Slag Treatment Operation: Filter pores trap by-products generated during slag treatment, eliminating or greatly reducing scrap and increasing casting yield.

Reduced Scrap Due to Furnace Changeovers:  Casting filtered metals results in increased casting speed and fewer furnace changeovers, which in turn reduce the amount of scrap product related to slag carryover during furnace changeovers.

Learn More →



SELEE’s foams are unique reticulated structures designed for use in applications ranging from electrodes to metal filtration.  A wide range of materials and configurations are available:

Pore Size:  30ppi

Relative Density:  13% – 20%

Size:  Maximum dimensions depend on product thickness, density and pore size.  Please contact a product specialist for more information.

Contact Us For More Information

Investment Casting Filters

Superalloy investment casting

SELEE has the right ceramic filter composition for your investment foundry.  Whether it’s master melt or casting, our filters can be designed for custom structures.

Need More Information?

Our amazing customer service teams are standing by to assist you in obtaining all the information you need. Reach out today and let SELEE assist you in your metal filtration needs.

Contact Us

Call Us At 1-800-438-7274