U.S. Sealube is a water based formula specifically designed to lubricate rubber, allowing for fast and easy seal installations. It provides a high degree of lubricity to all rubber components but unlike PTFE or silicone based lubricants, U. S. Sealube evaporates, allowing the elastomer to grip the shaft or bore. Elastomers are left dry to the touch. The lubricity is gone and will not return even in the presence of moisture.