304 Stainless Steel Seed Phrase Backup Plate with 5-Letter Slots
This 304 stainless steel seed phrase backup plate provides durable, offline storage for 12-, 18-, or 24-word English BIP39 recovery phrases. Designed for compatible Ledger, Trezor, and other crypto wallets, it features five-letter slots, 416 double-sided letter tiles, and deeply etched characters for lasting readability. Two numbered storage sections help preserve word order, while a retaining screw and safety lever secure the tiles. Its compact design and upgraded matte finish make it practical for cold wallet recovery phrase storage. Custom logos are available for brands and retailers seeking a personalized metal seed phrase backup product.
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Specification | Details |
Product Name | Stainless Steel Seed Phrase Backup Plate |
Material | AISI 304 stainless steel |
Structure | Layered construction with protective outer covers and two internal letter tile storage sections |
Capacity | Up to 24 words; 12 words per storage section |
Word Format | Up to 5 letters per word |
Compatibility | English BIP39 recovery phrases, including 12-, 18-, and 24-word phrases |
Plate Dimensions | Approx. 105 × 60 × 6.2 mm |
Letter Tile Dimensions | Approx. 3.7 × 8.7 mm |
Letter Tiles Included | 2 sheets × 208 tiles; 416 double-sided tiles in total |
Character Marking | Double-sided chemical etching with recessed letters and numbers |
Surface Finish | Upgraded matte finish |
Tile Retention | Closing frame secured by a retaining screw and safety lever |
Logo Customization | Custom customer logos available; placement and size subject to drawing confirmation |
Packaging Dimensions | Approx. 160 × 110 × 18 mm |
Gross Package Weight | Approx. 400 g |
Retail Applications | Crypto wallet accessories, hardware wallet companion products, and offline recovery phrase backup |
Product Description
Keep your wallet recovery phrase offline with a compact stainless steel seed phrase backup plate. Designed for English BIP39 recovery phrases, this metal backup stores up to 24 words using individual letter tiles—without handwriting, engraving each word yourself, or relying on electronic storage.
The upgraded design combines five-letter word slots, deeply etched characters, a refined matte finish, and a secured tile frame for practical, organized recovery phrase storage.

1. Durable 304 Stainless Steel Construction
Made from AISI 304 stainless steel, the plate provides a durable alternative to a paper seed phrase backup. Stainless steel resists corrosion, water exposure, and heat, while the metal characters avoid relying on ink that can fade or wash away.
It is designed for users who want a physical backup of their Bitcoin wallet, crypto wallet, or hardware wallet recovery phrase. Resistance to extreme conditions depends on the exposure and should not be treated as a guarantee against every fire or accident.
2. Five Letters per Word for Easier Checking
Each word position accommodates up to five letter tiles, allowing you to record more of each word for easier recognition and checking.
The first four letters uniquely identify a word in the English BIP39 word list. The additional fifth position offers a more readable reference when arranging or reviewing your backup. For shorter words, record the complete word.

3. Up to 24 Recovery Words in One Compact Plate
Two storage sections hold 12 words each, providing space for one recovery phrase of up to 24 words. Clearly numbered positions help you preserve the original word order.
The plate accommodates 12-, 18-, or 24-word English BIP39 recovery phrases. When backing up a hardware wallet, check the recovery phrase format rather than relying on the wallet brand alone.

4. Deeply Etched Characters for Lasting Readability
The letters and numbers are chemically etched into the stainless steel tiles rather than printed on the surface. Recessed markings provide a durable, readable reference for long-term physical storage.
The upgraded etched tiles have a flatter, more even surface than the previous stamped version shown in the comparison image, creating a cleaner appearance when assembled.


5. Refined Matte Surface Finish
The upgraded matte finish gives the plate a more uniform appearance and a smoother feel in hand. Compared with the earlier brushed version, the surface looks more refined, complementing the neatly arranged letter tiles.

6. 416 Double-Sided Tiles for Flexible Assembly
The supplied set includes two letter tile sheets, each containing 208 tiles:
- 416 physical tiles in total
- Characters etched on both sides
- 832 character faces across the complete set
- A selection of letters and numbers for assembling your backup
Choose the required character side for each position and arrange the tiles in the correct word order. The double-sided design provides more character choices without requiring a separate physical tile for every character face.




7. Secured Tile Frame with a Safety Lever
The tiles sit inside a frame that closes over the storage slots. A retaining screw and safety lever help keep the frame closed and the arranged tiles in place.
The outer cover conceals the characters when closed. This supports private storage, but the plate should still be kept somewhere secure: anyone who gains access to the complete recovery phrase may be able to access the wallet.

8. Set Up Your Backup Yourself
Assemble your recovery phrase using the supplied tiles, without sending your words to a manufacturer or engraving service.
Open the cover, release the retaining screw and safety lever, and arrange the letters in the numbered slots. Check every word and its position before closing and securing the frame. Repeat for the second storage section if needed.
9. Compact Size for Convenient Storage
The plate measures approximately 105 × 60 × 6.2 mm, making it convenient to store in a safe, secure drawer, or dedicated backup container.
Individual tiles measure approximately 3.7 × 8.7 mm, providing a practical balance between compact storage and readable characters.

Product Specifications
- **Material:** AISI 304 stainless steel
- **Recording method:** Individual letter tiles
- **Capacity:** Up to 24 words, with 12 words per storage section
- **Characters per word:** Up to five
- **Compatibility:** English BIP39 recovery phrases
- **Plate dimensions:** Approximately 105 × 60 × 6.2 mm
- **Tile dimensions:** Approximately 3.7 × 8.7 mm
- **Tile quantity:** Two sheets with 208 tiles each; 416 tiles total
- **Character markings:** Double-sided chemical etching
- **Surface finish:** Upgraded matte finish
- **Package dimensions:** Approximately 160 × 110 × 18 mm
- **Gross package weight:** Approximately 400 g
Applications
Suitable for offline seed phrase storage, Bitcoin wallet recovery backups, hardware wallet recovery phrase storage, and personal crypto self-custody. The plate stores your recovery words; it does not electronically store or transfer cryptocurrency.
Questions and Answers
1. What is a crypto seed phrase storage plate used for?
A crypto seed phrase storage plate provides a physical, offline backup of your wallet recovery words. It helps you preserve the information needed to restore access to your wallet if your hardware wallet is lost or damaged. The plate stores your recovery phrase rather than individual private keys.
2. Is this seed phrase backup plate compatible with Ledger and Trezor wallets?
This BIP39 seed phrase backup plate can store 12-, 18-, or 24-word English BIP39 recovery phrases, including those used by compatible Ledger and Trezor wallets.
3. Why choose a 304 stainless steel backup for a cold wallet?
A 304 stainless steel cold wallet backup offers greater durability than paper, with resistance to corrosion, water, and heat. The etched metal characters do not rely on ink, making the plate a practical option for long-term offline seed phrase storage.
4. How do the five-letter slots and double-sided letter tiles work?
Each word position holds up to five letters. The first four letters uniquely identify each word in the English BIP39 word list, while the fifth letter makes checking easier. The seed phrase storage plate includes 416 double-sided tiles with 832 character faces. Arrange the required letters in the numbered slots, check the word order, and secure the frame.
5. How can I order a custom stainless steel seed phrase backup plate?
For custom logo seed phrase plates, please send your logo file, order quantity, and requirements to luna@nkeyto.com. We will review your request and provide pricing, lead time, and a drawing showing the logo placement for confirmation.
Factory Description
We have a full set of etching production equipment and mature processing technology. We can manufacture products in any shape with mesh sizes as small as 0.1mm, according to your requirements.
Our Advantage
Factory Direct Shipping
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Experienced Design and Manufacturing Team
We work closely with customers from the design phase to help avoid potential product flaws, ensuring both the functionality and design meet expectations.
Excellent Supply Chain Management
We can quickly adjust production schedules to meet your urgent deadlines, whether it's for large bulk orders or smaller rush orders.
OEM & ODM Support
We offer the option to print your logo or other customizations.
Strict Quality Control
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
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