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Kroil Penetrants Trusted by Industrial MRO & Trades Professionals

From rusted nuts and bolts to stuck shafts, and more, Kroil penetrates even the smallest crevices to free things up.

Since 1939, Kroil penetrants have been trusted by industrial MRO and trades professionals to quickly loosen frozen metal parts. From rusted nuts and bolts to stuck shafts, and more, Kroil penetrates even the smallest crevices to free things up.

Kroil attacks corrosion and removes rust and carbon deposits to simplify maintenance and repair. This high-performing penetrant prevents problems on the shop floor—problems that cause downtime, slowdowns, breakages and bottlenecks. 

Kroil Original Penetrant:

  • Is VOC compliant in all 50 states,
  • Meets and exceeds military specifications for loosening frozen metal parts; and
  • Doesn't contain any Class I or Class II ozone depleting compounds.

Kroil Penetrant with Silicone is also available to provide extra lubrication and protection against rust. 

Kroil Penetrant come in aerosol or liquid form, in sizes from 8 ounces to 55 gallons. 

When corroded parts threaten downtime or slowdowns, nothing rivals powerful, industry-proven Kroil penetrants to keep your business moving.

Kroil, Unseize the day.


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