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tamper proof key rings
Tamper-Proof Key Rings®



Tamper-Proof Key Rings®

the industry standard among security professionals

Strict tolerances provide you with the ultimate in strength and durability. Key Systems, Inc 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 your mechanical or electronic key management system 

As a one time 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

tamper proof key rings

Solid Stainless Steel
Tamper-Proof Key Rings®

 Key Ring Specifications

solid tamper proof key rings

Stranded Stainless Steel Flexible
Tamper-Proof Key Rings®

Solid Stainless Steel 4 mm ring thickness
Stranded Stainless Steel 2.6 mm cable, 4 mm seal

Key Capacity (In terms of standard builders hardware)

1″ (3 cm) 14
1.625″ (4 cm) 22
2″ (5 cm) 30
3″ (7 cm) 46
4″ (9 cm) 66


Colour Coded Control

flexible tamper proof key rings

Each size of Tamper-Proof Key Ring® is available in both solid and flexible braided stainless steel. The solid rings require our closing tool to align the ring prior to sealing. Both solid and flexible rings are sealed with the same Crimping Tool. Both types of rings can be cut using the optional Cutting Tool. This is especially useful in secure environments where the presence of bolt cutters breaches security rules. 

colour coding for tamper proof key rings

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.

Unique Identity

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.

unique key ring identity

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.

smooth ring seal

The Toolset

Key Security Products provide the toolset required to ensure that you can manage your Tamper-Proof Key Rings® and maintain the security of your assests.  These three unique tools prevent the substitution of alternative key rings. The toolset includes a special Closing tool required to close the Solid keyrings prior to sealing and a Sealing tool that is required to seal both the Solid and Flexible key rings. There is also a special Cutting tool for use in environments where bolt cutters would be a security risk.

solid ring closing tool


Closing Tool

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

ring sealing tool


Crimping Tool

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

ring cutting tool


Cutting Tool

Used to permanently cut open the key rings seal in order to remove any keys or assets. Ideal in environments where standard cutting tools e.g.; bolt cutters, could breach security rules.

Download the Tamper-Proof Key Rings® brochure.