Your Top Sealing Partner
You need a seal?
We got it!
At Top-Osa, we custom-design and custom-make seals to meet your unique needs. Or you can find a suitable seal from our vast, ready-to-go standard seal storage of over 15 000 pieces. We offer fast delivery to all our clients in Nordic countries.
Our offer
Top Sealing Partner Services.
Top-Osa Oy is on of the leading manufacturers and importers of seals in Finland. The company has a wide and comprehensive range of seals and gaskets for the most challenging industrial needs, and if required, we can also customize a seal for you. We have more than 30 years of experience in seal manufacturing, production, sustainable development and importing.
Thousands of seals in stock.
We design and manufacture hydraulic and pneumatic seals according to your models and measurements. You can choose the material of your seal from over a dozen different options and diameter sizes varying from few millimeters up to four meters. Seals are manufactured fast, but with precision by our state-of-the-art CNC-machines in our modern production lines.
Our way of working
Comprehensive selection of profiles and materials.
You can choose your seal from over 90 standard profiles in inch or millimeter sizes. Combining this with tens of different material options opens up possibilities to create seals for almost any type of environment.
Download catalogue here
Our way of working.
Top Sealing Partners' seals are more than just part of the machine - they are handcrafed, designed entirely to the customer's specifications. We understand that every project is unique, which is why we focus on custom design and manufacturing. Our seals, made from high quality materials, ensure durability and reliability in all conditions.
Prototypes of new products.
Creating prototypes is a unique task that requires skill and experience to make it effective. Here at Top Sealing partner we have been prototyping and creating new products for decades and know what it takes to quickly get through the process. At its easiest you give us the dimensions of the installation space and some background information about the usage and let us decide the best profile and materials to make it work.
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Quality, certified.
For us, quality is more than just a word, it is part of our everyday work. In order to be able to ensure the level and development of our operations, we have wanted to guide our operations in accordance with the standards.
With the certification of our quality management system, our customers can be sure that our operations meet the requirements of the internationally widely used ISO9001:2015 standard.
Since development is continuous, we have started working towards another well-known international standard. The goal is better sealing solutions and a better future for all of us.
Certificate document











