Chemically inert-PTFE won’t dissolve or break down in common organic solvents like acetone, turpentine, hexanes, or lighter fluid. Hydrophobic-it doesn’t dissolve in water or get wet.A melting point of around 620☏ (327☌)-for most applications, PTFE won’t melt.Lots of thread sealants are made of PTFE, but what is it? Polytetrafluoroethylene (PTFE for short) is a fluoropolymer-in other words, a plastic that contains fluorine atoms. Tape sealants are applied simply by wrapping the tape around and pressing it into the threads, and they are made of PTFE. Tape sealants have no solvent instead, the sealant is made into a film and is sold in rolls of varying width, thickness, and density. Tape thread sealants are a mess-free alternative to paste sealants. Read the product instructions to make sure you use the right sealant for the right application. Other sealants aren’t meant to dry at all. Some pipe thread sealants are anaerobic, meaning they dry only in the absence of air and in the presence of metal. Others consist of a mixture of minerals, rosin, and alcohols. Paste sealants can have different ingredients. They are sometimes referred to as pipe dope or pipe joint compound. Paste sealants are applied with a brush or finger directly to both the male and female threads. Pipe thread sealants come in two general varieties-paste and tape. Besides creating fluid-tight seals, pipe thread sealants also lubricate the threads, making assembly quicker. Simply put, thread sealant is a material that fills the gaps at threaded pipe connections, preventing fluids from leaking out. What’s the difference between PTFE and Teflon™?.What is pipe thread sealant? Answers to common questionsīefore we get into how pipe thread sealant is used, let’s dig into some common questions about it. Shop paste-type thread sealant, applicator brushes, and PTFE tape. Get the supplies you need to seal pipe threads at QRFS. Then, we show you how to apply pipe thread sealant to create water-tight joints in threaded pipe. In this article, we answer common questions about pipe thread sealants, including the difference between paste and tape sealants, whether thread sealant is the same as PVC glue (it isn’t!), and the difference between PTFE and Teflon™ (there isn’t one). Are chemically stable, not breaking down at temperature extremes or dissolving in common solvents.Lubricate threads so they screw in smoothly.Fill the gaps in threads, preventing fluid from leaking out.Pipe dope, pipe joint compound, pipe thread seal-these are all different names for products used to create fluid-tight seals in threaded pipe joints. That’s where pipe thread sealants come in. Especially under pressure, the threads leave space for fluids to leak out. However, unlike these other pipe fittings, threaded pipe connections don’t form fluid-tight seals on their own. Threaded pipe saves fitters from labor- and skill-intensive pipe-joining techniques like flanging, butt-welding, brazing, and soldering. Learn about the convenience and purpose of pipe thread sealant
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