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2026-09
304 Stainless Steel Seed Storage Capsules: Material and Housing Specifications
A 304 stainless steel seed storage capsule needs separate specifications for its material, enclosure geometry, and protective performance.
Stainless steel’s corrosion resistance comes from its chromium-rich passive film. It is not immunity to corrosion: chloride exposure and crevice conditions remain relevant considerations.(worldstainless.org)
Specify the Material by Component
For a stainless steel recovery phrase backup, request material identification for the cover, holder, letter tiles, and retaining clip individually.
Where chloride exposure is a design concern, compare 304 with 316 rather than assuming that all stainless grades perform alike. Type 316 contains molybdenum and generally offers better resistance to chloride-related pitting than Type 304.(worldstainless.org)
Turn Wall Thickness into a Drawing Requirement
The supplied product brief describes a 2.5 mm outer shell. Before using this value in an OEM specification, clarify whether it means nominal or minimum wall thickness and where it is measured.
For housing quotations, request:
- Outside diameter, bore diameter, and wall-thickness tolerance.
- Closure geometry and thread details, where applicable.
- Bore-to-closure concentricity requirements.
- Surface condition and cleaning requirements.
If CNC machining, tube-based fabrication, or deep drawing is proposed, ask the supplier to show how the chosen route meets the same finished geometry.
Separate Material Claims from Product Tests
Do not use 304 grade or 2.5 mm wall thickness as a substitute for enclosure qualification. Request defined exposure conditions and acceptance criteria before publishing waterproof, fireproof, or crush-resistant claims.
For this application, the proposed acceptance plan should evaluate both enclosure integrity and post-test character readability.
About NKEYTO
NKEYTO is the international brand of Shenzhen Xintu Precision Hardware Co., Ltd., a precision metal manufacturing supplier based in Shenzhen, China.
We provide one-stop precision metal manufacturing services, including chemical etching, precision laser cutting, stamping, CNC machining, electroplating, and other customized surface treatments. Our capabilities support the development and production of precision metal components for industries such as semiconductors, electronics, optics, medical devices, and industrial applications.
With engineering support and flexible manufacturing capabilities, we help customers develop customized metal parts from prototypes to small and medium-volume production.
For technical evaluation or quotation, please feel free to contact:
Luna
Head of International Trade & Pre-Sales Technical Consultant
Email: luna@nkeyto.com
WhatsApp: +1 213 221 9094
Phone / WeChat: +86 135 5470 8126
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Shenzhen Nkeyto Precision Hardware Co., Ltd. is a factory specializing in precision hardware processing, committed to providing customers with high-quality products and services.We look forward to working with you.
Contact Us
E-mail: luna@nkeyto.com
Tel: +1 213-221-9094
Add: 13th Building, 202, Dawangshan Second Industrial Zone, Dawangshan Community, Shajing Street, Bao'an District, Shenzhen, Guangdong Province
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