Blue Monster Professional-Grade pipe joint compounds have been engineered to address poor quality metal threads and the increased use of plastic pipe systems. Two formulas are available in the regular compounds one with and one without PTFE. They won’t "separate" in the can as easily as other brands when not in use and they adhere to the threads even in the presence of water or oils. Blue Monster® Heavy-Duty Industrial Grade Thread Sealant is available in a convenient 2 ounce squeeze tube. Ideal, compact size for any tool box or storage bin. Non-hardening, slow-drying soft-set formula is non-toxic and grit free.