A unique, multi-layered, 100% PTFE packing/sealant. Chesterton 3500 Valvelon® offers anti-extrusion construction that conforms to surface shapes, withstands a wide range of temperatures, and seals virtually all chemicals. Ideal for valve packing and flange gaskets.
CAUTION: Do not use on liquid or gaseous oxygen, molten alkalimetals, and some rare halogenated compounds.