KROIL Original Penetrant with Silicone Aerosol 16 oz
KROIL Original Penetrant with Silicone Aerosol is a 16 oz aerosol penetrant oil built to tackle frozen, corroded, or stuck metal parts. Whether you're dealing with seized bolts on a rifle or rusted hinges on a storage locker, this penetrant cuts through corrosion at a molecular level to free up metal-on-metal bonds without the usual hammering and cursing. The silicone additive in the formula boosts lubrication staying power and rust prevention beyond the classic Kroil base, making it especially valuable in harsh environments—coastal salt air, high humidity, or anywhere moisture and oxidation team up against you.
Hunters and shooters use penetrants like this to restore function to vintage firearms, free up corroded parts before repair, and protect tools and gear stored in damp conditions. The aerosol dispenser puts the oil exactly where you need it, into tight gaps and hard-to-reach spaces where brush or drip application falls short. A single 16 oz can covers multiple jobs, making it a handy staple for the workshop, truck box, or gun cabinet.
Made in the U.S.A. and formulated to meet 50-state VOC compliance, KROIL with silicone is engineered for use on bearings, slides, gate valves, hinges, chains, and any corroded or frozen assembly that needs coaxing back into service. Keep one within reach whenever you're faced with metal parts that refuse to move.
Key Features
- Penetrates at the molecular level to break rust and corrosion bonds
- Silicone additive enhances lubrication and extends rust protection
- Aerosol delivery reaches tight spaces and confined areas
- Effective on bearings, slides, valves, hinges, chains, and corroded assemblies
- Excellent for coastal or salt-air environments
- U.S.A. made and 50-state VOC compliant
Specifications
| Container Type | Aerosol |
| Size | 16 oz |
| Manufacturer | Kano Labs |
| Formulation | Penetrant with silicone |
| Origin | Made in U.S.A. |
| Compliance | 50-state VOC compliant |
Frequently Asked Questions
What's the difference between KROIL Original with Silicone and regular penetrant?
The silicone additive in this formula provides extra lubrication protection and rust prevention beyond the classic KROIL penetrant base, making it better suited for high-corrosion environments and for jobs where lasting protection matters as much as initial penetration.
Is KROIL with Silicone safe for gun parts and firearms?
KROIL is a penetrant and lubricant widely used in firearms work. As with all solvents and oils, follow safe handling practices and manufacturer guidance, and apply in a well-ventilated area.
Can I use this penetrant on coastal or salt-air exposed equipment?
Yes. The silicone formula is specifically designed for use in coastal areas and other locations where salt spray and weather exposure accelerate rust and corrosion.
What metal parts and assemblies is this penetrant designed for?
KROIL with Silicone is engineered for frozen bearings, slides, gate valves, hinges, chains, and other corroded or seized metal-to-metal assemblies that need penetration, loosening, and lubrication.

