Strict tolerances provide you with the ultimate in strength and durability. Our patented Tamper-Proof Key Ring® technology provides your most valuable assets with an added layer of protection. These high security stainless steel rings cannot be opened without detection thus preventing asset removal or substitution. They may serve on their own as a high strength key ring or in conjunction with our Security Asset Manager™ (SAM™) electronic cabinets. As a onetime use security device, our rings verify that items taken from a safe match the items returned to that safe. Tamper-Proof Key Rings® come in five different sizes of solid or flexible style and are used to secure assets from keys and utility knives to medical equipment and cash tills. Tamper-Proof Key Rings® is a registered trademark of Key Systems, Inc

Smooth Seal

Our crimping tool closes both solid and flexible rings with a smooth seal. This allows for a 360-degree use of each ring without the hindrance of a raised seal.

Unique ID

No two key rings are alike and are uniquely identified by a permanent serial number. Each ring is engraved before distribution to allow for detection in the event it is tampered with or replaced.

Flexible Rings

Each size of Tamper-Proof Key Ring® is available in both solid and flexible braided stainless steel. Both solid and flex rings are sealed with our same Crimping Tool.

Color Code Control

The only plastic we use with our Tamper-Proof Key Rings® is the color-coded tags. Five colors are available to help group key rings for quick identification.


The Cutting Tool

Used to permanently cut open the key rings seal to remove any keys or assets.


Clamps down to create our smooth seal on both solid and flex rings.


Closes and holds the solid rings shut in preparation for crimping.

Stainless Steel Solid Rings 4mm ring thickness
Stainless Steel Flex Rings 2.6mm cable, 4mm seal

Diameter Key Capacity*
1" (2.5 cm) 14
1.625" (4.1 cm) 22
2" (5 cm) 28.125"
3" (7.62 cm) 46
4" (10.1 cm) 66

*Key Capacity is in terms of standard builders hardware


Strict tolerances provide you with the ultimate in strength and durability. Our popular Tamper-Proof Key Rings® provide an added layer of protection for your most valuable assets. These high-security, stainless steel rings cannot be opened without detection, thus preventing asset substitution.

  • 10 stainless steel 1" rings

  • 10 stainless steel 1 5/8" rings

  • 10 stainless steel 2" rings

  • 1 closing tool

  • 1 crimping tool

  • 1 cutting tool

  • 50 color coded ID tags

  • Also includes a sample of every size ring