Twist-Loks Tamper-Evident Seals

Twist-Loks are numbered, single-use plastic seals that provide visible, tamper-evident security for sterilization trays, instrument cases, carts, and supply containers. Made by Healthmark Industries, each seal locks with a simple twist and cannot be reopened without breaking — so any interference is immediately obvious to the next person who handles the container.

The seals in this collection measure 1 inch and come individually numbered, which is what makes them useful for tracking and accountability. In a sterile processing department, that number lets you match a tray to its documentation and confirm no one opened it between decontamination and the point of use. If the seal is intact and the number matches your record, the contents are verified; if it's broken or the number differs, you know to investigate before anything reaches a patient.

Color coding helps here too. The green Twist-Loks (5224 GN) and red Twist-Loks (5224 RD) let departments assign meaning by color — for example, separating processing stages, flagging priority trays, or distinguishing between departments and shifts. Choosing a consistent color scheme up front makes visual auditing faster across a busy workflow.

Common questions from buyers usually come down to a few points: these are plastic (not metal), so they break cleanly by hand or with cutters and won't damage instruments; they're intended for one-time use and should be replaced after every opening to preserve the tamper-evident chain; and because they're sequentially numbered, ordering enough to cover your daily tray volume without duplicate numbers matters for clean recordkeeping.

If you also need a locking style that clicks shut rather than twists, compare the options in our Snap-Loks collection to match the seal to how your team handles containers.