INPRO SEAL BEARING ISOALTORS PROTECTS YOUR BEARINGS AND ENHANCES ITS LIFE 1O TIMES BY PREVENTING THE EXTERNAL ConTINMINATION AND RENTAINING THE OIL INSIDE THE SUMP. INPRO SEAL ARE REPLACED OF OIL SEALS AND HAVE A LonGER LIFE GIVING YOU A BETTER PERFORMANACE AND RELIABILITY ON YOUR ROTATING EQUIPMENT.ITS A NON ConTACT AND A NON WEARING DEVICE.