Tamper-Proof Key Rings®
Protect critical keys and assets with serialized stainless-steel security rings designed so they cannot be opened without leaving evidence.
Unique Serial Number
Every ring is permanently identified to help detect substitution or replacement.
Tamper Evident
Opening the sealed ring requires permanent cutting of the ring or seal.
Five Sizes
Choose from five ring diameters for small through large key sets.
Solid or Flexible
Each size is available in solid or flexible stainless-steel styles.
Add a Physical Layer of Key Accountability
Tamper-Proof Key Rings® are high-security stainless-steel rings designed for applications where ordinary split rings do not provide enough control.
Once properly sealed, keys or assets cannot simply be removed and replaced without opening the ring. The permanently engraved serial number provides another way to verify that the same ring has returned.
Security You Can Physically Verify
Several design details help make the ring itself part of the key-control process.
Smooth Seal
The crimping process produces a smooth recessed seal so the finished ring can rotate through a full 360 degrees without a raised obstruction.
Unique ID
Each ring is permanently serialized before distribution, helping identify substitution or replacement.
Flexible Rings
Flexible rings use braided stainless-steel cable while retaining the same tamper-evident sealing concept.
Color Coding
Optional colored identification tags help organize key groups for faster visual recognition.
Solid or Flexible Stainless Steel
Both styles use the same security principle while giving you a choice based on how the key set will be handled.
Solid Stainless-Steel Rings
The rigid solid-ring design provides a strong, traditional key-ring shape for high-security key sets and controlled assets.
Flexible Stainless-Steel Rings
Braided stainless-steel construction provides greater flexibility for equipment, large key sets and applications where a rigid ring is less practical.
How Tamper-Proof Key Rings Work
Load
Place the keys or compatible assets onto the selected solid or flexible ring.
Close
For solid rings, use the closing tool to align the ends in preparation for sealing.
Crimp
Use the proper crimping tool to create the permanent smooth security seal.
Cut to Open
Removing or changing secured assets requires permanently cutting the sealed ring.
Match Ring Capacity to the Key Set
Each diameter is available in both solid and flexible configurations.
Approx. 14 Keys
2.5 cm diameter
Approx. 22 Keys
4.1 cm diameter
Approx. 30 Keys
5 cm diameter
Approx. 46 Keys
7.62 cm diameter
Approx. 66 Keys
10.1 cm diameter
Key capacities are approximate and are based on standard builders hardware. Actual capacity depends on key size and the assets attached to the ring.
Make Key Groups Easier to Identify
Color-coded identification tags provide a simple visual method for separating departments, buildings, vehicles, access levels or other key groups.
The tags do not replace the permanent ring serial number. They add another quick visual reference for everyday key organization.
The Right Tools for Closing and Opening
Tamper-Proof Key Rings use purpose-built tools so the ring can be properly closed, permanently sealed and intentionally cut when changes are authorized.
Closing Tool
Holds and aligns solid-ring ends before the ring is permanently crimped closed.
Crimping Tool
Creates the smooth permanent seal used to secure the ring after the key set is assembled.
Cutting Tool
Permanently cuts the security seal when authorized personnel need to remove or change secured assets.
Everything Needed to Get Started
The starter kit combines commonly used ring sizes, installation tools and identification tags so a facility can begin implementing tamper-evident key control without sourcing every component separately.
Pair Tamper-Proof Rings With SAM™
Tamper-Proof Key Rings® can be used independently or with compatible Security Asset Manager™ systems to combine physical key-set integrity with electronic access control and accountability.
Secure More Than Individual Keys
Tamper-Proof Key Rings can be used anywhere assets need to remain grouped together and unauthorized removal or substitution needs to be detectable.
Need Better Control of High-Security Key Sets?
Tell us how many keys you need to secure, the size of the key sets and whether the rings will be used independently or with an electronic key-management system. Coin Security can help determine the right ring size, style and tooling.
Tamper-Proof Key Ring FAQs
What makes the ring tamper evident?
Once properly crimped closed, the ring must be permanently cut in order to remove or replace the secured keys or assets.
Does each ring have an identification number?
Yes. Each ring is permanently engraved with a unique serial number to help detect ring substitution.
What sizes are available?
Rings are available in 1-inch, 1⅝-inch, 2-inch, 3-inch and 4-inch diameters.
Are flexible rings available?
Yes. Each ring size is available in both solid stainless-steel and flexible braided stainless-steel configurations.
What tools are required?
Solid rings use a closing tool before crimping. Both ring styles use the appropriate crimping tool for sealing and can be permanently opened with an approved cutting tool.
Can the rings be reused?
The sealed ring is intended as a one-time-use security device. Once cut open, a new ring is used to resecure the key set.
Can they be used with electronic key cabinets?
Yes. Tamper-Proof Key Rings® can be used with compatible Security Asset Manager™ electronic cabinet configurations.
Are identification colors available?
Yes. Five color-coded tag options are available to help visually organize different key groups.
Make Unauthorized Key Removal Easier to Detect
Combine stainless-steel construction, permanent serial identification and a tamper-evident seal to add another layer of control to critical key sets.