Kroil Original Penetrant
Loosen frozen metal parts the professional way, with Kroil Original Penetrant in liquid and aerosol (Aerokroil) formulas. Discover why Kroil has been trusted to help loosen bolts in various applications since 1939.
The Penetrating Oil Used by Pros
When it comes to freeing corroded items in tough spaces, nothing rivals powerful, industry-proven Kroil penetrating oil. Used and trusted by pros and experienced DIYers alike since 1939, Kroil quickly loosens rusted nuts and bolts, frees frozen shafts, pulleys, and more. No space is too tight to reach, thanks to Kroil’s ability to penetrate the smallest opening, thread or crevice. Corrosion meets its match, as Kroil helps remove and prevent rust, cleans and lubricates, and displaces moisture. NEW! NSF Nonfood Compounds Program Listed Category Code: H2 Registration #165745 (8oz and gallons). 50-State VOC Compliant. Made in the U.S.A. (Portions of packaging imported.)
Attacks Corrosion
Helps Remove Rust and Carbon Deposits
Fast Action
Works Everywhere
Simplifies Repairs
Penetrates Deeply
- Agriculture
- Automotive
- Aviation
- Construction
- Electrical
- Facilities Maintenance
- Factories
- Firearms
- First Responders
- HVAC
- Industrial
- Infrastructure
- Lumber
- Manufacturing
- Maritime
- Mechanical
- Metal Fabrication
- Military
- Mining
- Oil & Gas
- Plumbing
- Utilities
- Transportation
- Agricultural equipment
- Automobiles
- Bearings and bearing mounts
- Boats and marine equipment
- Bushings
- Castors
- Chains and track pins
- Construction equipment
- Conveyors
- Corroded fasteners
- Drilling equipment
- Engines and engine parts
- Equipment disassembly
- Firearms
- Frozen gears and cogs
- Frozen nuts and bolts
- Gearboxes
- Heat exchangers
- Hinges and pins
- Hitches
- Locks
- Lugs and lug nuts
- Pillow blocks
- Piping
- Plumbing fixtures
- Printing presses
- Pulleys
- Pumps
- Rivet guns
- Saws
- Screws
- Shafts
- Sliding mechanisms
- Sporting equipment
- Turbines
- Valves
- Washers
- Winches and cranes
Safety Data Sheets
Maintenance Tips
Videos
FAQs
Thanks for noticing our great new look! While you will soon be seeing new Kroil packaging on the market, the same great products are still inside the cans. The formula hasn’t changed.
Both products have similar penetrating properties, and can be used in multiple applications. The biggest difference between the two is the lasting lubricating effect of silicone in Kroil Penetrant with Silicone (SiliKroil). In addition to lubrication, silicone helps to displace moisture, which adds an extra element of protection.
Yup, the exact same product is in all Kroil Original Penetrant liquid and aerosol cans.
If there is already current damage to the blued finish, Kroil penetrants can possibly creep under and lift the finish from the gun/rifle. In the event of overspray, simply wipe excess Kroil off the affected area(s) with a clean dry cloth.
Please visit our where to buy page on this website for purchasing instructions.
We sure can, please call us at 800-311-3374.
Yes, Kroil products are safe and effective on all metals.
Yes, Kroil products are available to Amazon Business members only, at this time. If you are not an Amazon Business member, we encourage you to shop from a Kroil distributor in your area. Visit our where to buy page for a full listing, and check back often, as new distributors are frequently added.
WARNING Prop 65 Compliance: This product can expose you to chemicals including beta-myrcene, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.