Hydraulic Stop Leak



Hydraulic Stop Leak

Part: # 00239 | Size: 32 oz. |

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BlueDevil Hydraulic Stop Leak permanently seals hydraulic leaks. The hydraulic leak sealer is available in a 1 quart (32oz) bottle. One quart treats up to 20 quarts or 5 gallons of hydraulic oil.

  • Guaranteed Permanent Seal
  • Restores Dried, Cracked, and Shrunken Rubber Seals
  • Works in all Hydraulic Systems


Directions: BlueDevil Hydraulic Stop Leak



  1. Turn equipment off, pour 1 oz. of BlueDevil Hydraulic Stop Leak per quart (of hydraulic oil) into hydraulic reservoir. 
  2. Run equipment until leaks are sealed (1 to 2 hours or until leaks stop).

BlueDevil Hydraulic Stop Leak quickly revitalizes hard, shrunken or leaking seals to their original condition as it circulates throughout the system. BlueDevil Hydraulic Stop Leak not only revitalizes but also conditions seals to like new and contains no petroleum distillates that can harm the system.

CAUTION! Avoid contact with skin. Keep out of reach of children. Always use protective eyewear.

DISPOSAL: In accordance with all local, state and federal regulations.


If you have further questions in regard to the proper application of this product, please call 1.888.863.0426 to speak with our Tech Department.

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Thanks BlueDevil!

I have saved a lot of money on hydraulic fluid in the last two years thanks to BlueDevil. Dallas – Naples FL

This Product Works

This product works. I have repaired several leaking wreckers in our fleet with this product, saving me money and time. Thank You – Tony G – Charlotte NC

Haven't seen a Drop!

I don’t believe in a mechanic in a bottle. As a last resort I used this product on a leaking hydraulic lift. Much to my surprise I have not seen a drop of fluid in over a year.” Ronald – Bastrop, TX


BlueDevil Hydraulic Stop Leak is a unique plasticizer for all rubber seals. BlueDevil absorbs into the seal to soften, expand & revitalize the size and flexibility to its original condition.

Use 1 quart to treat up to 8 gallons of hydraulic fluid.

BlueDevil repairs leaks points while you operate the vehicle or equipment.

NO. BlueDevil mixes with the fluid and can stay in the system.

YES. BlueDevil does not contain petroleum distillates, which can destroy seals after temporarily expanding them. It is safe to repeat treatment if other seals leak in the future.