
Key Systems Tamper-Proof Key Rings® are precision-engineered to deliver the highest standards of strength, durability, and tamper resistance. Manufactured with strict tolerances and constructed from high-security stainless steel, these key rings are designed to safeguard your most valuable assets. Their patented Tamper-Proof Key Ring® technology ensures that once sealed, they cannot be opened without clear evidence of tampering — effectively preventing unauthorised access, asset removal, or substitution.
As single-use security devices, they provide an auditable verification system — ensuring that items removed from safes or storage are identical to those returned. Available in five sizes and solid or flexible styles, Tamper-Proof Key Rings® are ideal for securing everything from keys and utility knives to medical instruments, evidence bags, and cash tills.
| product code | ring diameter | ring thickness | shop link | |
|---|---|---|---|---|
| Sealed Key Rings 3cm | KR-3 | 1" (25mm) | 4mm | |
| Sealed Key Rings 4cm | KR-4 | 1 5/8" (41mm) | 4mm | |
| Sealed Key Rings 5cm | KR-5 | 2" (50mm) | 4mm |
| product code | shop link | |
|---|---|---|
| Closing Tool for Sealed Key Rings | KR-CLOSING-TOOL | |
| Crimping Tool for Sealed Key Rings | KR-CRIMPING-TOOL | |
| Cutting Tool for Sealed Key Rings | KR-CUTTING-TOOL |
Various solid keyring sizes available
Specialised Crimping tool
Easy application