Cryptosteel products reviews
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Cryptosteel was mentioned in a CNET article about securely storing seed phrases, highlighting its protection against fire and flooding.
Reviews and User Testimonials

It is a steel device that you can use to mark down your recovery phrase and then subsequently seal it up to keep it protected. It is water-resistant, fire-proof, shock-proof, and stainless. This makes it practically indestructible (…)

The capsule looks absolutely robust and resistant (…) The deep thread hermetically seals the capsule and thus keeps the information safe even under water. The capsule can withstand the impact of a 9 mm projectile.

In summary, for bitcoiners, and also for anyone wanting to protect passwords and other information, it is a good way of moving to a robust and compact offline storage for seed words, and could be used in a variety of security configurations.
Cryptosteel Seed12 reviewed by Anthony Jefferies on Jan 20, 2025.

Cryptosteel Capsule is made out of 303 and 304-grade stainless steel and is capable of resisting temperatures of up to 2500 °F (1400 °C). Moreover, the all-metal capsule can withstand up to 150,000 N of pressure.
The Seed12 builds on the strength of the previous Cryptosteel Capsule … will have no problem resisting things like fire, water or physical damage.
Cryptosteel Seed12 reviewed on the Crypto Guide YouTube channel in video posted on Oct 17, 2024.

The Cryptosteel feels sturdy and I can definitely see how this product can survive all kinds of natural elements like fire, pressure, corrosion and acid. ... I would recommend the Cryptosteel if you have a large cryptocurrency holding as it offers more security compared to writing down your mnemonic sentence on a piece of paper.
Cryptosteel reviewed on Coingecko by Bobby Ong, u

The Capsule’s cylindrical design makes it a pretty inconspicuous product.

Zaista je teško zamisliti kakva bi to kataklizma bila u stanju uništiti kapsulu do te mjere da podaci pohranjeni u njoj postanu neupotrebljivi.
Such a great piece of Engineering! @cryptosteel made a product that’s accomplishing its goal, but it’s also sexy.
Cryptosteel Capsule reviewed on the Explore Crypto YouTube channel by @SanakTony in video posted on Oct 26, 2019.

All letters were identifiable even after what I think is the maximum credible event in regards to heat testing.
Results of user stress test as seen in Twitter thread Anyone else interested to see how the @cryptosteel Capsule stands up to a 550 gallon liquid pool fire (Fuel: Jet A-1)?, posted by @JimJones1913 on Oct 29, 2019.
Cryptosteel Dash special edition endorsed on the Dash Digital Cash YouTube channel by cryptocurrency maven Amanda in video posted on May 17, 2017.

[…]Mit Cryptosteel hält dein Recovery Seed den Elementen stand und kann mit einem Schloss außerdem vor neugierigen Blicken geschützt werden.[…]
I would recommend the Cryptosteel if you have a large cryptocurrency holding as it offers more security compared to writing down your mnemonic sentence on a piece of paper.
– Cryptosteel Review by CoinGecko, February 2017
This product is awesome! It doesn’t require any outside power. It can withstand the elements . You can zap it with a million volts and it will survive.
– Captain Jack, Cryptosteel customer
This is amazing. Moreover, I like the idea of an open source hardware project.
– anonymous Bitcoin miner and Cryptosteel customer
Best way to stash your passwords or private keys. Love the packaging, too.
– Simon Dingle, Cryptosteel customer
I’m a huge Cryptosteel fan. All bitcoin folk need at least one.
– Doctor Goss, MD, Cryptosteel customer
Happy birthday to me! Loving both the packaging and the product.
– Diana Biggs, Cryptosteel customer
The best metal Bitcoin wallet. Simple, yet reliable. Unassuming, but practically indestructible.
– Timothy P., Cryptosteel customer
I bought the Seed12 to secure my seed phrases and private keys, and I’m really satisfied. The stainless steel material is durable, fireproof, and waterproof, giving me peace of mind knowing my data is protected against fire, water, or accidents. The design is compact and discreet, making it easy to store without taking up much space. I also appreciate that it’s tamper-proof, adding an extra layer of security. It’s a practical and reliable solution for anyone looking to protect critical information long-term.
– Alba, Cryptosteel customer (Amazon USA)
We have been Cryptosteel users for the better part of 2017 and have nothing but the best things to say about it. We literally tell everyone in our network, be it our investors, partners, or clients, that if they are looking to securely store their seed passphrases or other critical data, they need to look no further than a Cryptosteel as it really is the best solution.
– Michael Sonnenschein, Director of Sales and Business Development at Grayscale
Cryptosteel is THE most secure way to back up a cryptographic private key or seed. Cryptosteels give you CCSS Level 3 compliance right out of the box, being impervious to fire, flood, static electricity and even EMPs. I truly believe there is no better alternative.
– Michael Perklin, cryptocurrency security expert and CISO at ShapeShift.
The product got me thinking about my digital inheritance plan I’ve been working on recently, and it seems like a superior backup to paper. In fact, CDs, paper, USB flash drives, hardware wallets, and other products could easily be damaged by fire or break down over time. Cryptosteel can definitely survive these types of elements but would also have to be hidden in a secure location. … Overall the product is an interesting way of storing Bitcoin private keys, PIN numbers, and lengthy passwords in a near-indestructible fashion.
– Cryptosteel Cassette review by Jamie Redman on Bitcoin.com on Jan 26, 2017.
I have used a bunch of these and think the cryptosteel capsule is the best bet. It’s flexible, secure and well priced.
– Crypto guide on Cryptosteel Capsule vs Billfodl reddit discussion