Definition
A solvent-based cleaning product designed to remove oil, grease, hydraulic fluid, and similar contaminants from skin without the use of water. In aviation maintenance contexts, it is the recommended method for removing hydraulic fluid (such as Skydrol) from skin promptly after contact, before washing with soap and water.
Plain English
A hand-cleaning product you rub on dirty hands and wipe off with a rag — no sink or running water needed. It cuts through greasy stuff like oil and hydraulic fluid that regular soap struggles with.
Context Anchor
Seen in aircraft maintenance and hydraulic fluid safety discussions, especially after handling or contacting hydraulic fluid.
Why Pilots Care
Certain hydraulic fluids irritate or damage skin on contact; immediate removal prevents injury during line service or inspections.
Intuition Check
Waterless does not mean cleanup is unnecessary. It means the cleaner can be used without running water when a sink is not available.
Example Sentence 1
After topping off the hydraulic reservoir, the mechanic used waterless hand cleaner to remove the fluid from his hands before heading inside to wash up.
Example Sentence 2
The maintenance kit includes waterless hand cleaner for quick cleanup when hydraulic fluid contacts skin in the hangar.