Packing made from pure yarn of expanded PTFE where graphite is encapsulated. The particularity of this yarn is to combine the qualities of the PTFE and of the graphite. The encapsulation of the graphite in the expanded PTFE eliminates the migration of the graphite and the thermic expansion.
Particularly suitable for centrifugal pumps and low pressure valves. It is excellent packing for general use in all fluids, except in strong oxidizers such as oleum, fuming nitric acid, aqua regia and fluorine.