Internally Lubed Materials

For those applications where an external lubricant like RT/Dygert’s Seal Kote™ or Seal Lube™ is not desirable (such as automatic feeder bowl assemblies), RT offers the internally lubricated compounds in the table below.  Internal lubrication involves the introduction of a lubricating agent into the compound during the mixing stage.  The advantage of this type of lubrication is that the lubricant is dispersed throughout the compound, and therefore the cured compound, instead of just on the surface.  Since all rubber compounds have relatively high coefficients of friction (COF), it is very important to counteract this in the most efficient way possible, especially in dynamic sealing applications.
     
Different internal lubricants have different effectiveness is reducing the COF, but RT’s proprietary organic lubricant is by far the most effective.  Due to its chemical makeup, it is best suited for compounds where the curing temperature is not too high, such as nitriles and EPDMs.  It should be noted, however, that some fluids and solvents and dissolve or leach out the proprietary lubricant, so testing in the actual environment is always recommended.

For two of our most popular internally lubricated compounds, N-7010 and N-7044, a coefficient of friction test report and a case study, respectively can be obtained by contacting customer service.