

🛑 Stop leaks, start winning—seal your hydraulic system like a pro!
BlueDevil Hydraulic Stop Leak is a 32 oz seal conditioner designed to restore flexibility to rubber seals and permanently stop leaks in all hydraulic systems. Safe for pumps, cylinders, and valves, it works while your equipment runs, eliminating downtime and costly repairs.






| ASIN | B00D46NSTM |
| Best Sellers Rank | #17,038 in Automotive ( See Top 100 in Automotive ) #11 in Hydraulic Oils |
| Brand | BlueDevil Products |
| Customer Reviews | 4.3 4.3 out of 5 stars (582) |
| Date First Available | May 31, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2 pounds |
| Item model number | 239 |
| Manufacturer | BlueDevil Products |
| Manufacturer Part Number | 00239 |
| Model | 00239 |
| Product Dimensions | 9.5 x 3.5 x 3.5 inches |
D**.
Hydraulic stop leak
Had a small hydraulic leak on my tractor. The product stoped the leak. Much cheaper than replacing seals.
T**.
Works great
I used this in a 256 versatile that had a bad hydraulic oil leak between the engine and hydrostatic transmission. After about a week the leak was about non existent. After a year has stopped completely. Great product. Will buy again and again. Great product.
E**D
Stops leak?
Seals on my wood splitter was leaking fluid. Used the while bottle. Slowed leak but didnt completely stop it. Lesk was a 9 now its a 2. So far...
K**.
Well worth the price
Used a bottle in my tandem axle dump truck hydraulic system a month ago. Before the lift piston was leaking noticeably and making a mess, now it barely leaks anything, it's not a miracle "repair" in a bottle, but for the price you can easily squeeze in my case months more of use out of a badly leaking hydraulic piston to give you more time before paying that hefty repair bill. Wouldn't hesitate to buy again.
C**T
Thumbs up
Stopped two leaks for me. I love this stuff. Had a forklift that had a puddle under it every morning - now there might be a drop after is sat for a week !
R**N
I would like a replacement
When I received the package and opened the box the bottle cap was off and leaked out
C**.
This stuff works
The loader bucket on my Massey Ferguson was dropping fast to the point I couldn’t even use it after draining a couple quarts of hydraulic fluid I added a half bottle of this and filled it back up with new fluid every day I would start it put the throttle at operation speed and work the bucket up and down about 10 times then shut it down relieve all pressure using the control stick. Did this for 3 days the 4th day I was scooping full buckets of dirt it completely fixed it. Highly recommended
F**G
It helps a lot , it should work good on slower leaks, than the bad seals I have on my backhoe
It helped right away but didn't stop completely , I'm happy to stop most of the leak
D**S
After been plagued with lots of little leaks on my very old 3 ton excavator and reading up on this liquid seal I gave in and ordered I was about to do an hydraulic oil and filter change at this point, followed instructions the first bottle sealed 90% so after running for a day I added another bottle This is amazing stuff seal and increases the hydraulic power ten fold I would highly recommend if you have minor drips
L**N
Fast delivery and god quality product.
A**R
I like the container and its contents. More than enough product for the job I had for it. I knew of an obvious seal leak in a hydraulic ram on my tractor. Being an old girl and myself being new to this fairly complicated machine, I'm not sure just how many internal leaks she may have had or how many have been repaired. So far nothing bad has come of any of it so I give it a thumbs up. 👍
E**E
Used 2 bottles for my leaking hydraulic system. After 2 weeks, dipstick showed same oil level drop as before the Blue devil additive. Snake oil product.
S**N
It seems to be working as advertised
Trustpilot
2 weeks ago
1 month ago