The cure begins when the sealant is confined within the threads of the metal pipe connection and air is excluded. They are acceptable when the installation of a piping system does not require adjustment of components more than a few minutes after assembly.Īnaerobic resin compounds use a different cure chemistry than solvent-based pipe dopes and do not contain solvents. Pipe dopes offer MINIMAL resistance against vibration. Recommended Uses: Solvent-based pipe dopes provide an adequate seal in applications where high temperatures and pressures are NOT expected. Pipe dopes may lack sufficient resistance to solvents. This possibility is especially true with systems that are subjected to significant vibration. When the seal shrinks and cracks, leaks can develop. Pipe dopes harden quickly and produce a moderate to strong seal.ĭisadvantages: Solvent-based pipe dopes can lose their effectiveness as the result of heat aging. This condition creates the potential for the dope to pull away from the thread walls or crack, allowing leaks to develop.Īdvantages: chemical composition is compatible with all pipe materials, including plastic. Because it contains solvents, pipe dope has a tendency to shrink over time as the solvent dissipates. The resulting seal adheres to all plastic and metal pipes and effectively blocks leak paths. Pipe dope relies on a solvent carrier and hardens when the solvent evaporates.
Ignoring the portions describing teflon tape, I'd like to quote where he discusses the advantages and disadvantages between pipe dope and anaerobic resin compound sealants, which he clearly prefers over pipe dope: I ran across an article called "Guidelines for Choosing a Pipe Thread Sealant", edited by Joseph L. Sealant, on the other hand, can also include anaerobic resin compounds.
Seal gas pipe free#
I want a good, no, the very best pipe thread sealant for lubricating and sealing lead free brass fittings for use in potable hot water.Īnd I do mean sealant, not necessarily dope. The industrial brand LA-CO checks in with their LeakTite Blue, not to mention Weld-On with their Blue Seal, and then Spears has their Blue 75, and even Northern offers a Premium Grade Blue. Even Rectorseal got in on this blue colored pipe sealing act with their trademarked "Tru-Blu." Oatey re-enters the fray with their Great Blue Pipe Joint Compound.
Blue Monster, Blue Magic, Blue Block, Blue Megalock. In recent years, many pipe thread sealants have emphasized the color blue, for some reason.
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