ABOUT US
11D International is a trusted and innovative tyre sealant manufacturer delivering bio-based, high-performance solutions worldwide. Since our founding, we’ve helped fleets reduce downtime, repair costs, and improve safety using our unique, environmentally friendly technology.
11D’s unique formula was first developed in 1994 by founder Cok Meijer: a former pilot and entrepreneur with a passion for innovation and mobility.
Working closely with suppliers and technical experts, and after months of testing together with TNO, Meijer created the original 11D Formula. The name “11D” was inspired by the 11th test sample, which finally achieved the desired permanent sealing performance.
Over the years, the formula has evolved to meet the needs of both high-speed vehicles and heavy-duty equipment, balancing viscosity, safety, and sealing capability. In 2015, this continuous development led to 11D Protector, designed for use under extreme and military conditions, a product now used in NATO operations.
Today, 11D has grown into a global network of distributors and partners active on four continents.
Although founder and inventor Cok Meijer has sadly passed away, his pioneering spirit, technical vision, and passion for innovation remain an important part of 11D’s identity. His legacy lives on in the technology he created and continues to guide the company’s development and future.
FROM TEETH TO TYRES
That may sound like a special career switch, and it is! But for Kees van der Poel and Tijn Stoeldraijer it felt like a logical step. After working in the dental world for more than 25 years, they became enthusiastic about the power and simplicity of the anti-puncture tyre fluid from 11D. A product with potential, practical value and direct benefits for users. They are now fully committed to bringing this smart solution to the attention of companies who can benefit from it on a daily basis.
They are not alone. The 11D team is a great mix of experience and drive. Rinus Paul has been a pillar of strength as warehouse manager for 15 years and ensures full-time that everything runs smoothly behind the scenes. Nicole Tweebeeke has even been involved from the very beginning — for 41 years! — and is responsible for administration, purchasing and, where necessary, a helping hand in every department. Jennifer van der Vlies strengthens the team part-time with her expertise in the field of marketing and the website.
Together we form a team that believes in this product, and especially in what it can mean for you as a user: less downtime, lower costs and more peace of mind. Our mission? To introduce everyone who rides on wheels (or is responsible for them) to the benefits of 11D anti-puncture tyre fluid.
At 11D International, we believe innovation never stops. That’s why we continue to invest in research, testing, and partnerships with fleets and industry leaders across the world. Our mission goes beyond preventing punctures — it’s about creating safer roads, reducing waste, and supporting businesses that depend on reliable transport every single day. Whether you operate a single vehicle or manage a global fleet, we are committed to being your trusted partner in tyre protection for the future.
WANT TO KNOW WHICH 11D TYRE SEALANT YOU NEED?
Use our free 11D Tyre Sealant Calculator to instantly calculate the correct amount of sealant and discover which product suits your vehicle.
✓ Instant advice
✓ Correct dosage
✓ Suitable for agriculture, transport, construction and industry
