Canada EN
Mexico ES
Penetrants
When seized parts stop progress, you feel it first.
Every stuck fastener, every frozen fitting, every minute of downtime lands on your shoulders. CRC® Penetrants are built for those moments, cutting through rust, scale, and corrosion fast to get things moving again. No flames. No waiting. Just results that get you back online and ahead of the clock. Because the only thing tougher than the job should be your solution.
Knock’er Loose® Penetrating Solvent
Best for freeing rusted, seized, or corroded fasteners
Every seized bolt feels like a personal challenge. You’ve been there: rusted threads that won’t give, bolts fused by time and neglect, and a supervisor asking how long it’ll take. You can’t waste heat, force, or patience. You just need it loose, and fast. CRC® Knock’er Loose® quickly cuts through rust, scale, gum, and corrosion, freeing frozen parts without torching, over-torquing, or breaking components. Its low-viscosity formula seeps deep to do the hard work for you.
Knock’er Loose® Plus Penetrating Solvent
Best for freeing rusted fasteners in fuel/brake lines or no-flame zone
You know the moment: the bolt won’t budge, the line’s down, and every minute costs more than you want to admit. You don’t need promises—you need movement. CRC® Knock’er Loose® Plus uses freeze-shock technology to rapidly lower the temperature of the metal, causing it to contract. This cracks the rust and creates space for the industrial strength solvent to rapidly break the bond. For use in no-flame zones, it’s the go-to when heat isn’t an option.
