Absolutely the best and cheapest fix for tanks that leak at the the valves.
355110
We needed this for our last trailer as the black tank leaked at the valve. We bought it for our new trailer as a preventative measure. Every RV needs one of these.
4924753
Great solution if you maintain your sprinkler system yourself and don't want to pay a guy $150 to do something that takes 5 minutes and requires no tools.  I blew up the old backflow vent after forgetting that the outflow was shut and sending all the pressure through this plastic part.  (This is where the professionals who charge $150 are laughing at me.  Yeah, I know)  The good news here is that all you need to do is unscrew the top of your backflow preventer, replace the broken parts with this kit, screw the top back on and you are ready to go for winter.  If you need any instructions, there are youtube videos to show you exactly how.
Shipping was fast and the price is right.
4975049
This is an inexpensive solution to a problem. It tightens my faucets so they are guaranteed not to leak. It makes it possible to tighten without scratching the finish.
1963748
This is the only thread sealant I'm going to be using from now on.  I rebuilt an entire 60 galllon 5HP twin cylinder air compressor from the ground up with an auxiliary 80 gallon receiver and pressure tested both tanks without one leak.  That pretty much says it all right there.  DOPE!!!
232283
I had a leaky hose that I tried lots of different methods to stop the leak (clamps, tapes, and spray-on rubber sealant) that did not hold under the pressure. This stuff worked great and only took minutes for the hose to be useable again.
3980181
My landlord put a new toilet in my apartment and the tank was very shaky.  They came a couple of times to tighten it and it kept going back to the wobbly tank with no improvement.  I decided to look on line and discovered Secure-A-Tank.  Within 10 minutes I cut and installed two (one on each end of the tank)  and my problem was solved.  One of the easiest fix-it-yourself solutions I've ever used.
1859171
After several years of operation our Kohler toilet developed leak in its' canister style flush valve which caused its' tank to refill repeatedly.  Cleaning the bottom of the existing seal and its' seat didn't help.  Upon installation of the new valve seal, which took all of 30 seconds, the leakage problem was immediately resolved.  That was over a month ago and the toilet as operated flawlessly ever since.  It's amazing that such a simple repair can be so effective!.
3035036
We've been having issues with one of our septic tanks (we have two septic systems leading out of our house).  The drain for the guest bath and laundry room was plugged and NOTHING was working - power snake?  Nope.  Various chemicals for emergency septic cleaning?  Nope.  A drain cleaning water bladder wasn't available locally (the stores said there was too much liability and that we could rupture our drains).  This was a last-resort fix and one that we should have tried right away.  Once the bladder was placed in the drain and the hose was turned on, the clog was gone in seconds.  We can once again flush the toilet in the guest bath; the shower no longer backs up and best of all, I don't have to go to the laundromat to do laundry.

We plan on using the bladder on a regular basis to keep this particular drain running smoothly.

Great product, great price, delivered on time.  Anyone who has a septic system should keep one of these on hand.
4847381
Worked perfectly...saved me a lot of money replacing my bent valves and valve seals.
3121032
Just completed my latest toilet tank repair. I've used Fluidmaster before without any problems. This one took less than an hour.
This was actually part 2. We bought just the valve portion kit first, thinking the included flapper would fit the remaining existing drain pipe. It didn't. So then we had to replace all the existing tank guts. Now everything works as expected. No more valve or flapper problems.
One reviewer complained about the instructions. I found them to be very precise. Appeared to actually have been written by someone who could speak English.
The price for this kit here on Amazon is cheaper than Home Depot.
3002200
After waiting way to long to fix the tank to bowel leak I got this flapper for my Kohler tank. Easy install and fixed the leak from the tank drain. take your time in getting the chain to match the original (assuming that was installed correctly). This float will end up under water, placing it closer to the flapper results in more water in the flush. Mine set up great with only 5 beads in the chain to the flapper (1.6 gal tank) . Take a close look at the bead chain to top hook connection. I needed 2 needle nose pliers since my hands no longer have sensitivity. Took two flushes for the flapper to retain enough water to work properly. Kick myself for wasting all that water before replacing the flapper.
4144895
As others have noted, these are far superior to the plastic versions in terms of sealing.

Some have commented on the problem of leakage around the valve stem. I ran into this, too, but there's a fairly easy fix that was suggested to me by the folks at the selling company. The problem is that the rubber gaskets inside the valve get dried out and don't seal well. This can be remedied by disassembling the valve and applying a little bit of food-safe lubricant (e.g., Petrol-Gel) to the gaskets. This totally fixed the problem for me.

It's a little bit of a hassle to have to do that, but it does demonstrate one very good point about this product, that sets it apart from almost everything else on the market today: it's designed so that you can maintain and repair it. I find that, along with the high build quality on these, to be confidence-inspiring for the long haul. So, on balance, I'm a very happy customer!
1250244
I have a 2013 Redwood 5th wheel. I bought it a year ago. About a month after I got it started have problems with the tank being clogged and would drain. I also couldn't get one of my valves to close all the way. I am Brandon from tank pro come out and clean my tanks. He cleared the clog. 3 months later clogged again. Called Brandon again to clean the tanks so that I could dive in and really fix it this time. After removing all the piping and valves I find out in was the knockout from when the factory put in the vent pipe it was lodged and kept the valve from closing.
Exactly what I needed to redo my black tank pipe
61887
I drive a 2000 Subaru Legacy GT LTD (MT), and had a coolant leak (within a few hours would be a good 12 oz size of coolant per day) until I used K-Seal and sure enough, it fixed the leak. This product is really easy to use and does fix most leaks. It was the most cheapest fix I have ever done to my car. I would highly recommend it to everyone!
4082130
This fixed my old ksc Glock 18c from the early 2000's. It was a leaky mess before but now it fills like new, no leaking during fill-up or afterwards. It took all of 20 seconds to replace the old valve using a flathead screwdriver. I forgot how good this gun is, nice to have her back...
1822394
Thanks to this part my refridgerator's water valve is fixed. I helped my dad install it and now the drinking water from my refridgerator dosent leak anymore.  i bought this part at a great price with quick delivery.  Thank you very much for having this part in stock..
3221929
Ok, So I saw these and they were cheap, so I though what the heck its worth a shot. My front kinda worked before and my back did not work at all. I really didn't think these would work. Mechanic said I had to replace everything cause the tank wouldn't even hold water. I got both pumps and they fixed everything. One of my old pumps had been broken in half and the rubber seal was bad, that is why all my water leaked out. My back and front both work like they are new. Even sound so quiet like they are new. If you are getting both replacements the plugs are different so you cant mess it up and they do come with rubber seals.