Cryptosteel Seed12

On the Cryptosteel Seed12 product page, you're presented with various solutions; either select a basic backup or a full seed protection kit.

Product specifications

Modules of the Seed12 System

Seed12 is a robust system designed for securely backing up sensitive data like recovery seed phrases, passphrases, private keys, and other types of alphanumeric passwords. Deeply engraved character tiles are stacked on the metal core, secured with patented cotter pins at both ends. The metal backup can be enclosed in a protective Capsule shell and protected with a tamper evident seal. The capsule is hollowed out in a solid piece of aero-grade stainless steel offering extreme protection against any type of destructive forces. The PSW-97® Security Seal by American Casting & Manufacturing Corp. with nearly 45kg (100 lbs) of breaking strenght is marked with a unique serial number, allowing to easily manage your backups.

Seed12 Backup Core

• Basic unit to create “naked seed” metal backup. All parts are made of space-grade stainless steel.
• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 90 g
• Included in the box: 1 x Seed12 core, 4 x cotter-pins, 12+ x separators and 310+ double-sided letter tiles (Aa-Zz latin alphabet), printed user manual

Seed12 Security Kit

• The Security Kit is our solution for providing the highest level of protection for your 12-word seed phrase restore backup.
• Packaging dimensions: 95 x 66 x 18 mm / 3,7 x 2,6 x 0,7 in
• Packaging weight: 171 g
• Included in the box: 1 x System Backup Core unit, 1 x Capsule Container, 1 x Security Seal module (three seals with the precut wire)

Shell Capsule

• Packaging dimensions: 65 x 39 x 18 mm / 2,5 x 1,5 x 0,7 in
• Packaging weight: 64 g
• Included in the box: 1 x stainless steel cylindric capsule with a cap, printed user manual

Letter Tiles

• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 84 g
• Included in the box: 310+ double-sided, stainless steel letter tiles (Aa-Zz latin alphabet), printed user manual

Number Tiles

• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 40 g
• Included in the box: over 130 double-sided, stainless steel arabic digits tiles (0-9), printed user manual

Symbol Tiles

• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 30 g
• Included in the box: over 80 double-sided, stainless steel symbol tiles, printed user manual

Unit Upgrade Core Parts

• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 11 g
• Included in the box: 1 x Seed12 core, 4 x cotter-pins, 12+ x separators, printed user manual

Security Seal

• Packaging dimensions: 65 x 39 x 15 mm / 2,5 x 1,5 x 0,6 in
• Packaging weight: 16 g
• Included in the box: 3 x PSW-97 Security seals with, 3 x precut composite wire, printed user manual