The Cryptosteel Seed12 Security Kit is our solution for providing the highest level of protection for your 12-word seed phrase restore backup. The kit allows you to permanently record your 12 words on metal plates stacked on a core, securely enclosed in an airtight steel capsule, and sealed with a tamper-proof barrier seal featuring a unique serial number.
Seed12 Backup Core
Basic unit to create “naked seed” metal backup. All parts are made of space-grade stainless steel.
Shell Capsule
Protective hermetic steel shell. A hermetic protective casing made of space-grade stainless steel to protect your backup core. The capsule features holes for installing a tamper-proof seal. Its surface has a finely grooved texture, which prevents fingerprint marks.
Security Seals
Set of three tamper-evident security seals for your backup. PSW-97® Security Seal: Lock it easily without tools and benefit from its nearly 45 kg (100 lbs) breaking strength.
At a Glance
| Type |
Capsule |
| Material |
Solid metal – 100% stainless steel |
| Shell |
AISI 303 |
| Core |
AISI 310 |
| Tiles & Separators |
AISI 304 |
| Weight |
171 g |
| Manufacturer |
Cryptosteel |
Specifications
- Solid metal construction – 100% stainless steel
- Shell made of AISI 303
- Separators, fasteners, and character tiles made of AISI 304; Core AISI 310
- Packaging includes 310+ double-sided letter tiles (Aa-Zz latin alphabet)
In the Box
- 1 × System Backup Core unit
- 1 × Capsule Container
- 1+ × Security Seal module (three seals with the precut wire)
- Printed user manual