We design and manufacture specialised sealing profiles for the needs of the industry and building trade

Sealing profiles tailored to your needs

OT-Kumi Oy is one of the leading manufacturers of sealing profiles in Finland. Our factory is located in the town of Ii in northern Finland, about 35 kilometres north of the city of Oulu. Currently, our factory covers over 4,500 square metres of production space that caters for 11 extruders.

Construction industry

Window and door frame seals, wall element and glazing seals



Water and drain seals


Car and ship industry

Seals for cars, machinery, boats, ships and train carriages



Customer-specific sealing profiles

We design and manufacture sealing profiles for a carefully specified purpose. In our production, we use tested and high-quality materials. Our guarantee is to deliver all products quickly. We also have our very own service for design and manufacturing of nozzles, which are required for tailoring sealing profiles. The nozzles are manufactured with state-of-the-art, computer-guided machinery to reach the best possible result.

Our main markets are in Finland, other Scandinavian countries, the Baltic countries and Russia. In addition to Finnish, our international marking team provides customer services in Swedish, English and German.

Contact us

Contact our customer service by phone +358 8 655 8800 or e-mail us at [email protected]. We are happy to make you an offer!

The contact details for our staff and retailers are located on the Contacts page.