Q."Is the TU-555 thread sealing compound compatible with PTFE pipe tape?" A.Yes. Sometimes adding a good quality thread compound on top of the PTFE thread sealing tape helps seal joints even better. This is often done to natural and propane gas steel pipe and fittings to help make a better thread seal.
Please note: While we strive to ensure every product we label as "Made in the USA" really is 100% made in the USA, it is also important to understand that sometimes manufacturers make changes to their products, or for various reasons may receive components or materials that they would normally purchase domestically from an overseas supplier - and they don't necessarily let distributors (like us!) know that they've changed something about the product or where it is manufactured.
If you receive a product that PlumbingSupply.com® says is "Made in the USA" and the product states it was manufactured elsewhere, please contact us. We will happily replace or refund your purchase to your satisfaction.