Best PVC thread sealant I've ever used....very good product!

Worked as it's supposed to

This stuff is literally like magic for large, threaded pvc pool pump and filter fittings. I had a new large pool filter where the two threaded fitting on each side of it no matter what I did seeped a little water when the pump was running and system under pressure.I tried everything: simple joint thread tape, fancy thick blue thread tape, different types of pipe dope (thread sealant pastes), joint tape along with pipe dope, joint tape with silicone sealer, etc and it still leaked just a small constant drip of water droplets.Finally my last hope was to try some of this Plasto-Joint thread sealant stick I've that heard from some old-timer pool pro's that they swear by. I had nothing to lose other than having wait a couple days with the pool pump circulating system turned off while I waited for this Plasto-Joint to arrive (astonishingly I learned that even though I'm in the land of pools, Florida, no pool supply stores local to me sells it but luckily Amazon does with fast shipping).But I was still very skeptical given how every other technique I've used successfully for sealing copper, brass and pvc threaded fittings for air, gas and water over the past 30 years had failed on this pool filter's seeping fittings.Well I was pleasantly surprised a few days later as this Plasto-Joint stick sealant arrived and worked perfectly and the pool pump's threaded 2" threaded fittings are still perfectly sealed and now leak free for six months. After a six month observation period I can now safely say this Plasto-Joint literally saved the day for me and avoided me having to replumb a complex pool piping system on a cramped pool pad and replace a new, expensive pool filter.So I'm a believer now that this Plasto-Joint stick sealant is like magic: it'll seal large, leaking pvc threads when nothing else will. Just follow the instructions, get it thoroughly onto and all over both the male threads and inside the female joint and it'll seal better than any combo of thread tape, liquid/paste sealant or high-end silicone ever can.

Everything is leaking!

I used this for some pvc threads. Very easy to apply and it actually made connecting the male and female connectors easier than when I was dry fitting. Only 4 stars because the cylindrical case it came with was broken at the bottom. Not sure if oxidation degrades the product, but keeping it in a ziplock now.

It did not serve our purpose. I returned it.

Still leaked after applying the sealant.

I have used LA-CO's Plasto-Joint Stik Plastic Thread Sealant for years, It performs well as a thread sealant on schedule 40 pvc pipe. Attached is an image of LA-CO's thread sealant application chart.Adding any threaded unions drops the pressure rating by 50%. Thread sealants are preferred and recommended by PVC fitting manufacturers. PVC fitting manufacturers also advise against using Teflon® (PTFE) tape or pipe dope. The following is from a Major (present in the big box hardware stores) fitting manufacturer's website:"The "Do's and Don'ts" of Assembling Threaded Plastic Fittings--Don't over-tighten joints by giving them "one more turn to be sure."Do finger tighten plus one or two turns - No More.--Don't wrap Teflon (PTFE) tape or PTFE paste or pipe dope to add bulk to or to lubricate the joint. Do use a sealant for threaded joints.--Don't use "stronger" Schedule 80 threaded fittings on the assumption that they may solve the problem of splitting through over-tightening.--Do use only Schedule 40 threaded fittings with Schedule 40 pipe and fittings.--Don't over-tighten.--Do finger tighten plus one or two turns.It is important to realize that pipe thread sealant; especially those made with PTFE , lubricate the threads and mislead the installer to believe the joint is not tight.. Don't use PTFE tape, PTFE paste or pipe dope. Do use a sealant.PTFE tape, PTFE paste and pipe dope is intended for metal pipe and fittings. Metal to metal fitting joints are more difficult to tighten than plastic; the surfaces tend to gall without the aid of such lubricants as PTFE or pipe dope. Plastic fittings do not need this lubrication. When PTFE tape is wrapped around plastic male threads it adds to the strain and tensile stress. The tendency of most installers is to incorrectly wrap several thickness of tape around the male threads, increasing stain and stress further. PTFE paste and pipe dope, just like PTFE tape, make threaded joints slippery. Their use on PVC fittings can be an invitation to over-torque.When working with threaded plastic fittings do use a proper sealant. The right sealant for threaded joints is non-hardening, compatible with plastic and doesn't add slipperiness. A non-hardening compound is forced by water pressure into potential points of leakage, thereby performing a true sealing function. Tapes and hardening pastes permit a leak path to develop when a joint is backed off, mechanically flexed, or expands with rising temperatures. A sealing compound must be compatible to plastics. Many brands of pipe sealant contain oils, solvents or carriers that can damage plastic. A proper sealant must be certified by the manufacturer to be harmless to the fitting material and to not contaminate fluid in the pipe. Finally, a sealing compound must not lubricate the joint to the point that over-tightening is encouraged. Several sealants on the market meet all these requirements."Also note the that the pipe fitting convention for flow direction assembly is that flow goes through the nut (female) side first. It is just good practice to get in the habit. Most of the time it wouldn't matter, but in some applications in reverse, the service will erode the union.