Chesterton 1765 is ideal for whitening pumps and other rotary applications requiring white, non-staining packaging. Constructed from chemically resistant, expanded PTFE material, this packaging exhibits higher speed performance capabilities than traditional PTFE materials for increased performance in a wide range of applications. Chesterton 1765 is ideal for rotary applications where chemical resistance is required and the process must remain non-contaminated, such as ClO2 pumps, paper stocks, and feeders. Gland Packing Teflon