The Corporate Round Inkan (Hanko) Seal – Black Buffalo (18mm) is a high-grade Japanese company seal meticulously carved from genuine black buffalo horn. Renowned for its smooth texture, dense structure, and striking black finish, this traditional seal is ideal for corporate registration, contracts, legal documentation, and banking. The 18mm round format is the standard size for business seals in Japan, offering a strong, professional impression every time.
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- Material: Natural black buffalo horn—durable, refined, and historically favored for formal stamps in East Asia
- Function: Official corporate seal used for authorizing contracts, tax documents, banking forms, and company filings
- Design: Classic 18mm round format, hand-polished for an elegant and consistent appearance
- Engraving Quality: Smooth, dense horn allows for extremely crisp and precise engraving
- Aesthetic: Deep black finish conveys professionalism and authority
Technical Specifications
| Feature | Details |
|---|---|
| Material | Natural Black Buffalo Horn |
| Seal Shape | Round bar / Top round |
| Seal Size | 18mm diameter |
| Weight | 21g (both types) |
| Max Characters | Up to 25 characters |
| Seal Type | Corporate (Business Use) |
| Font Styles | Choose from 6 traditional options |
| Mail Delivery | Available (Domestic & International) |
Font Style Options
Choose from six elegant and traditional fonts commonly used for corporate seals in Japan. Each offers a unique aesthetic depending on the image and tone your business wants to convey:
- Seal Script (Inso-tai) – Timeless and formal, often chosen for official documents
- Old Seal Style – Decorative and historic with traditional flair
- Clerical Script – Balanced between formality and legibility
- Regular Script – Clean and highly readable, ideal for formal business use
- Cursive Writing – Smooth and flowing for a stylish impression
- Semi-Cursive (optional) – A hybrid of traditional form and contemporary style
Ideal For
- Company Registration: Legally recognized corporate seal for use in Japanese incorporation filings
- Contract Authorization: Commonly used to seal agreements with clients, partners, or vendors
- Financial Documentation: Required by banks in Japan for account creation and transactions
- Government Applications: Recognized for use in official administrative processes
- Corporate Identity: Enhances branding and legal authenticity of stamped documents
Shipping Information
Domestic Shipping (Within Japan):
- Free nationwide delivery to residential, office, or hotel addresses
- Ships safely in protective packaging
International Shipping:
- Available to major countries including:
United States, Canada, United Kingdom, Australia, Germany, France, Italy, Spain, Netherlands, Singapore, South Korea, Taiwan, Hong Kong, UAE, Qatar, Oman, Thailand, and more - Flat international shipping rate: $40
- Tracking provided for all shipments
- Securely packaged to ensure condition on arrival
Do you want to buy?
Why Choose Black Buffalo Horn for Your Corporate Seal?
- Premium Natural Material: Black buffalo horn is dense, solid, and traditional—ideal for producing clean, precise impressions
- Longevity: Highly durable and resistant to cracking or wear even with frequent use
- Prestige Appearance: Its deep black color and polished surface convey executive-level sophistication
- Japanese Craftsmanship: Each seal is engraved by skilled artisans with years of experience in hanko manufacturing
- Legal Authenticity: Accepted by Japanese legal systems, banks, and government offices
Custom Engraving Process
Once your order is placed, our team will custom-carve the company name in your chosen font style. Each seal undergoes layout verification and precision engraving to ensure clarity and balance.
- Language options: Kanji, Katakana, or Roman letters
- Production time: Typically 2–5 business days before shipment
- Proofing: Optional image preview available upon request
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