For Water & Oil Pumps - Valqua® No. 6201. Coil packing made of carbonized fabric yarn, processed with PTFE dispersion and lubricating oil, then braided into a square cross-section and finished with PTFE, fine graphite and lubricating oil. Features: Serviceable for relatively versatile fluids. Allows permissible PV value and shaft speed limit. Reduced shaft wear due to packing.