All padlocks — even PACLOCKs — require proper maintenance to keep them operating smoothly and reliably over time. Dirt, debris, and normal wear can build up inside the lock, leading to sticking keys, rough operation, and unnecessary replacement. PAC-C6 is manufacturer-recommended maintenance designed to keep locks performing as intended. PAC-C6 uses a dry graphite formula built specifically for lock cylinders and internal components. Unlike wet lubricants, it won't attract dust or grime or turn into sludge inside the lock. Instead, it helps keep internal parts moving consistently, supporting smoother operation and longer lock life. Application is simple. Use the included metal precision tip to deliver a single, controlled puff directly into the keyway or onto moving parts. Insert your key, cycle the lock a few times, and restore smooth operation. No over-application needed — a little goes a long way. PAC-C6 is designed to maintain all moving parts of a lock, including cylinders, shackles, ball bearings, and internal mechanisms. It works across padlocks, trailer locks, cam locks, and more — from everyday use to demanding environments like job sites and outdoor exposure. PACLOCK uses PAC-C6 to maintain our own locks, ensuring it meets the performance and reliability standards we expect from every product we manufacture. Made in China.