Master Lock PTFE Lock Lubricant, Non-Toxic and Biodegradable Lock Lubricant, 0.25 Fluid Ounces, 2300D

Well. I bought my little tube in 2015 (yes, almost 4 years ago), and I've been using this occasionally over the years, more as a preventative measure than anything else. Yesterday's events have encouraged me, however, to write a positive review for it. A Master lock on my property has been locked outside in the South Florida elements for at least several years, and during that time, not only did it go through Hurricane Irma, but it never got used (i.e. unlocked). Yesterday I needed to finally unlock it, and just as I feared, it was rusted shut. Although the key went in, it wouldn't turn a bit. I didn't want to wait, and I really didn't want to shell out $$$ and buy a bolt cutter, so I did some research, and went back there again with this little tube and a hammer. Greased up the holes, waited, banged the lock, jiggled key in lock. Repeated several times, and voila! it worked. The lock still isn't working buttery smooth, but who cares, I got it off. Don't know what's in this lubricant exactly, but it sure loosened up the rusty insides of my Master Lock, giving me access and saving me $. The lubricant i have is actually so old now that it's not even that runny, and the label is cracking too, but it still worked like a charm, and really proved itself too. :-D So,I'm here to buy another tube after yesterday's events, and although $5 for this little thing sounds expensive, for me that has worked out to be $1.25 a year on 3-4 padlocks, for saving me a lot of backyard sweating and cussing (which I do enough anyway), and emergency trips to the local home improvement store, so it's worth it! Also, I don't know if regular corn oil would have worked just as well, but this lubricant specially made for locks claims it has "PTFE" so I dont want to use regular cooking oil or WD-40 and ruin perfectly good locks or make a bad situation worse. That's a picture of my old lubricant, the lock which came off with its help, and the q-tips I'm using to clean out its insides, showing all the rust. Recommend.

The lock on our security screen door was so bad, we had to wrestle with it every time we unlocked it. Used Masterlock Lubricant, and Presto! It's like a brand new lock. And, the seatbelts in our car were jamming up horribly. Had to fight and fight to get them unhooked. Put some of this into the clasp, and immediately, they popped right apart when removing them. Fabulous product, I ordered a second one to keep on hand.

I noticed a gate padlock I put on a year ago was getting a little rusty, so after some research, and watching their video on how to use it on YouTube, I did as instructed. You basically apply a few drops at both ends (key end and hasp end) and then turn the key, work the hasp in and out, and spin the hasp around a bit, and the lock is well lubricated. What I absolutely didn't like about this was the plastic tube it comes in. It's meant to be like a pen with a pen-type clip, with a plastic tube body and cap. The problem was it wasn't easy to open or even to tell how to open it until I slide the clip and started squeezing and pulling. I was ready to just cut it open when it finally gave, but it wasn't intuitive. That could be improved, but the product worked great.

It is a tiny squeeze container shaped like a pen. One lock may use 10% of the lubricant. If you use it once or twice a year on a couple of locks/doors, then it may last you 3-5 years. It is for light use. That said - application is so easy. Could not be better. The applicator tip fits easily in the lock. Squeezing out a couple of drops is a piece of cake. The stiff/frozen/problematic lock now works like new. Perfect for front door locks in cold/dry climates. It even packs up well, a black plastic tip and a clear top case. No spilling. Safe to store. Great to have one around home or office. Prefect for tool box (next to plumbers tape) or kitchen junk drawer (by a multiuse screw driver). Note: We were not compensated in any way for this unbiased review. No one should be.

I live in Northern Indiana, and I bought one for myself and my young adult grandkids. Great item handy to have in a pocket or purse. Great item at a good price.

Two locks had gotten scratchy enough to bind the key, and barely be able to turn, in the San Diego desert/ocean climate. I simply squirted some in both, worked the keys, and both are very smooth in all regards now. A quick wipe for small amounts coming back out of the locks, and no mess, no stains, etc.. Much nicer than the graphite method, if long experience there from boyhood :) And the tube seals up nicely after, so it will be available for use again. Good experience, thanks.

My key got stuck in the gate lock. There were dust storms and the dust got into the lock. My key would not go in all the way. With this, my key goes in easily. It is like a new lock

I bought a pair of padlocks for a very good price. They are waterproof and are long enough to use on a bumper-pull trailer hitch for a little extra 'keep-it-from-popping-open'. Anyway, in early spring we get heckacious and welcome rain. After the first downpour, I unhitched the trailer without any problems. A couple of days later, when the impassable ruts became amusement park ride tracks, the lock wouldn't close! Prime free delivery later, the little tube of reassuringly runny stuff arrived. Dripped as little in the holes as possible, wiggled, latched, unlocked and repeated a few times. Worked! Good as new. We've had more rains and haven't needed more. BTW, there is more in the tiny tube for next time.

Bought this because the door lock to my new condo's front door was getting hard to lock and unlock with the key. I got to turn really hard in order to lock it. I applied this thing liberally to all moving parts; and I also unscrewed the lock and applied the lubricant to the inside of the lock directly. When I put the lock back, there is still some rough movement when trying to unlock with my key. But I left the lock alone for a couple of hours, and WOW, everything becomes silky smooth. Now my key just glides in and the opening movement is almost frictionless. I then proceed to apply this to my Cherry MX Red (CoolerMaster Master Pro L RGB) keys that have become sticky. I am very picky and I notice it when the keys have different feedback. So I remove those problematic keys from the keyboard, and applied the lubricant onto the Cherry MX Red switches. Put the key back on, and it works better than new. Highly recommended.

Really good to lubricate locks

Il cancello della mia attività lo chiudo con lucchetto, d’inverno era un disastro da aprire…una volta utilizzato questo lubrificante ha cominciato a funzionare meglio che da nuovo

I'm not always the handiest of people, so I was a little worried when the key to my condo front door wouldn't turn in the lock anymore. It seemed to just stick in the lock and I was concerned I was gonna be locked out one of these days. It was a tad stressful. Well, a bit of ol' internet research and lo and behold - here I am on Amazon buying some of this Master Lock lubricant for the door! (I bet you're here cause you did some research as well - back pats for everyone!) But I digress... Long story long, this lube is fantastic! Works like a charm! Its format is really like a pen - although more like one of those old clear glue sticks. I squeezed a drop or two on either side of my door key, and placed a couple of drops on the lock entrance itself. Then I inserted the key, turned it back and forth a few times to work it in - and presto! The lock has returned to its former smooth un-locking magic! Now, as fun as this review was to write, and as happy as I was to fix this problem, I have placed the cap on this lube pen, placed it in my junk drawer, and hope I don't have to think about this for at least a year or so! And here's hoping the same for you!

Excellent service and product from the seller. Very pleased with my purchase.