Metal-Free Thread Sealing Compound Jet-Lube TF-25 1 LB contains, in part, reprocessed PTFE and graphite in a high-melting, high temperature grease vehicle. It is further fortified with rust, corrosion, and oxidation inhibitors. TF-25's lubricating and sealing properties will prevent thread leaks of fluids, gases, or steam. It can be used for a multitude of low friction, anti-seize applications requiring maximum performance. It protects all threads from premature wear and prolongs the life of tapered-thread joints under all conditions. Ideal for press fittings. Benefits of using TF-25™ Non-hardening Contains no metallic additives Will not run, drip, or settle out Chemically inert Brushable Versatile and dependable May be used on both ferrous and Non-ferrous metals Lubricants and seals Specifications: Base Materials: Aluminum Complex / Petroleum Service Rating: -100°F to 600°F, -73°C to 316°C TDS