Metal Marking for the Security Seal Industry
Trusted since 1930 for American-made metal marking: The leader in marking security seal products

Durable Markings
Our equipment ensures long-lasting and legible markings that withstand harsh environments.
Customizable Solutions
We offer custom marking solutions to meet the specific needs of your industry.
Efficient Operation
Designed for automatic operation and offering consistent and accurate markings.

Unbreakable Trust: Numberall, the Leader in Security Seal Marking
In a world demanding absolute integrity and irrefutable proof, security seals are your first line of defense. But a seal is only as secure as its mark. That’s where Numberall Metal Marking Equipment sets the industry standard, providing the indelible identification crucial for uncompromised traceability and tamper evidence. For over 95 years, industry giants like TydenBrooks® and Cambridge Security Seals have relied on Numberall’s precision, durability, and unmatched customized solutions—a testament to our unparalleled expertise.
While others offer varied marking technologies, Numberall stands distinct in the security seal sector. We specialize in robust, mechanical marking – a critical advantage where the permanence of the mark directly correlates to the integrity of your security. Unlike inkjet or laser systems that can be prone to fading, smudging, or surface alteration, Numberall’s mechanical indentation provides a physical, irreversible mark that stands the test of time and tampering attempts.
Numberall Knows: Marking Security Seals
TydenBrooks® a leading manufacturer of security seals trusts Numberall equipment to permanently mark seals for essential traceability.
Download Case Study >>
Why Numberall is the Indisputable Leader for Security Seal Marking
Our enduring legacy in the security seal industry isn’t accidental. It’s built on a foundation of engineering excellence and a deep understanding of what true security demands:
Permanent & Tamper-Evident Marks: Numberall equipment creates deep, clear indentations on metal, plastic, and composite seals. This physical deformation cannot be easily removed or altered without clear, undeniable evidence of tampering, a superior advantage over surface-level marks.
Rugged Reliability, Unwavering Performance: Security seal marking often occurs in demanding industrial environments. Numberall machines are engineered for continuous, heavy-duty operation, ensuring consistent performance and minimal downtime, far surpassing the delicate nature of some alternative marking technologies.
Unmatched Durability of Identification: Your security seals face extreme conditions – temperature fluctuations, chemical exposure, abrasion, and physical stress. Numberall marks are engineered to endure these challenges, maintaining legibility and integrity where other marking methods might fail.
Precision and Uniqueness: Every Numberall mark is sharp, clear, and perfectly aligned, whether it’s a sequential serial number, a company logo, or critical data. This precision ensures unambiguous identification and enhances the professionalism of your seals.
Decades of Proven Trust: While competitors offer diverse solutions, Numberall’s singular focus and 95-year history in direct part marking and stamping positions us as the undisputed authority for the demands of security seal traceability. We don’t just mark; we secure.
Mark Your Security Seals for Permanent Identification

did you know?
no-cost marking of your sample part with expert recommendations


Model 250 Hot Stamping With Extended Leg
The Benefits of Choosing Numberall for Security Seal Traceability
When your reputation and the security of your assets are on the line, the choice of marking equipment is critical. Numberall offers distinct advantages:
Superior Tamper Deterrence and Evidence: A deeply stamped mark from a Numberall machine acts as a significant deterrent to tampering. Any attempt to remove or alter the mark will result in visible damage to the seal itself, providing instant and undeniable evidence of compromise. This is a level of tamper-proofing that many inkjet or laser systems cannot achieve on all materials.
Compliance with Industry Standards: Many industries, including shipping (C-TPAT, ISO 17712.2), logistics, and pharmaceuticals, mandate specific requirements for security seal marking. Numberall equipment helps you meet and often exceed these stringent standards for permanent, traceable identification.
Operational Efficiency and Speed: Our robust presses and numbering heads are designed for high-volume production, ensuring efficient marking without compromising on quality. This translates to faster processing and improved throughput for your security seal manufacturing or application lines.
Versatility Across All Security Seal Types: From high-security bolt seals for cargo containers to indicative plastic seals for asset management, Numberall has the right solution. Our equipment effectively marks:
- Metal Bolt Seals: Deeply stamp unique serial numbers, manufacturer codes, and logos onto steel bolts and locking mechanisms.
- Cable Seals: Permanently mark metal or plastic bodies of cable seals with sequential identification.
- Plastic Indicative Seals: Create clear, durable impressions on plastic seals, resisting fading and abrasion.
- Metal Strap Seals & Padlock Seals: Ensure permanent identification on various metal seal components.
- Custom Seal Components: Our expertise extends to customized fixtures and tooling for virtually any security seal design.
Reduced Lifetime Costs: Investing in Numberall means investing in longevity. Our machines are built to last for decades, requiring minimal maintenance and offering reliable performance, far outweighing the initial investment when considering total cost of ownership.
Numberall: Your Trusted Partner & Custom Marking Innovator for 95 Years
While competitors might focus on inkjet, dot peen, and varied marking options, Numberall’s deep-rooted expertise in precision mechanical stamping and numbering is precisely what the security seal industry demands. Our 95-year legacy is defined by:
Decades of Dedicated Focus: We aren’t just a marking company; we are pioneers in creating permanent, reliable identification solutions, with a significant historical footprint in critical industries like security and defense. This focused expertise is unmatched.
Engineered for Your Exact Needs: We pride ourselves on being a trusted leader in custom solutions. We understand that off-the-shelf often isn’t enough for the unique challenges of security seal design and application. Our experienced engineers work directly with you to:
- Design specialized numbering heads and character wheels.
- Develop customized fixtures and tooling for complex seal geometries.
- Integrate marking solutions into your existing production lines.
- Create custom marking machines to meet precise force, speed, and material requirements.
Unwavering Quality and Support: Our commitment to quality is embedded in every machine we build. This is backed by comprehensive customer support, including expert consultation, seamless installation guidance, operator training, and readily available parts to ensure your operations run without interruption. We build relationships, not just machines.


Looking for a solution to marking your pet & livestock tags?
Discover custom metal marking solutions for your pet & livestock application. With our long history of innovation since 1930, we can meet any requirement. Request a Quote today!

Secure Your Future: Partner with Numberall for Proven Traceability
The integrity of your security seals directly impacts your reputation, compliance, and bottom line. Don’t leave your critical identification to chance. Choose the proven leader with nearly a century of specialized experience.
Take the decisive step towards unmatched security and traceability.
Contact Numberall today for a personalized consultation. Discover how our unparalleled expertise, robust equipment, and customized marking solutions can fortify your security seals and empower your entire chain of custody.
Call us, or fill out our inquiry form now to speak with a sales engineer today!
phone: 207-876-3541
email: sales@numberall.com
Unmatched Benefits of Our Stamping Equipment
Customization
We offer tailored solutions to meet the unique marking requirements of your automotive parts.
Durability
Our stamping tools are designed to last, providing consistent performance even in demanding environments.
Precision
Ensure clear and accurate markings with our high-precision equipment.
Compliance
Meet industry standards and regulations with our reliable marking solutions.
Efficiency
Increase productivity with our easy-to-use and efficient stamping tools.
Support
Benefit from our exceptional customer service and technical support, ensuring your operations run smoothly.