How Compression Locks Work and Where They’re Used
Compression locks are designed to do more than simply hold a door shut. As the handle turns, the cam pulls the panel inward, applying compression against a seal or frame. That pull-in action helps reduce vibration, rattling, and water or dust ingress. In most cases, that’s why compression locks are used on electrical enclosures, outdoor cabinets, machinery doors, and HVAC panels.
In real installations, panels are rarely perfectly flat or rigid. Compression locks help take up that variation without forcing the door or putting extra load on hinges. They’re commonly manufactured in zinc alloy, stainless steel, or engineered polymers, depending on strength and environmental demands. Cam profile, grip range, and available compression travel all affect performance. On a datasheet, two locks can look similar, but in use the difference in sealing pressure and feel is often obvious.
Choosing the Right Compression Lock
Choosing a compression lock usually starts with how the enclosure needs to perform, not how the lock looks. Is the priority sealing against weather, reducing vibration, or controlled access? Those answers shape the right specification far more than face size alone.
When selecting a compression lock, it’s worth considering:
- Required compression depth and grip range.
- Type and thickness of seals or gaskets.
- Exposure to moisture, dust, or temperature changes.
- How often the door will be opened and closed.
At Concept Fasteners, we stock compression locks chosen for industrial and commercial use, based on what holds up in the field. If you’re looking to order compression locks that seal properly and stay reliable over time, shop our range with confidence or speak with us about the right option for your application.