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 8 000 pieces.

We offer fast delivery to all our clients in Nordic countries.


Our clients work in the demanding field of different industry. We help them to fix old leaking or broken parts with new dense and compact seals or manufacture completely new ones based on their unique ideas.

Custom-made seals for every need

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.

Seal prototypes for new projects

Waiting for the right prototype is often the cause of a delay in a project. With us, you can save valuable resources – money as well as time. You can choose seals from over 90 standard profiles of inch or millimeter sizes. If you want to try out new ideas, we can manufacture the seal according to your requirements.

We at Top-Osa offer our clients 


Whatever you need, we can manufacture and deliver it.
With us, you can easily order and test a seal.


Every seal is manufactured using quality materials which come from SKF plants in Europe. Seals are manufactured in our factory in Finland with care and precision.


Leave us a message and tell us your need, we contact you in the next 24 hours.


We have over 8 000 standard seals in our storage and ready to be delivered to you.


We have manufactured seals for over 20 years and worked in the field over 30 years. Our experienced team of 10 professionals is ready to serve you.


Our seals are already delivered to multiple clients in Nordic countries. We are commended by our clients for a very fast delivery. In the best case, we deliver the seal to you in the same day you ordered it.

Standard seals


  • Piston seals
  • Rod seals
  • Wiper seals
  • Guide rings
  • Telescope cylinder seals


  • Millimeter and inch-based
  • Materials: NBR, FPM, SILICON


  • Standard materials: NBR, FPM


  • Hardness 70 sh ja 90 sh
  • Materials: NBR, FPM, EPDM, SILICON, PTFE, PU, PTFE-coated FPM ja SILICON O-rings
  • O-rings
  • O-ring set
  • X-rings
  • Support rings


  • Piston seals
  • Rod seals
  • Wiper seals



Contact us 

At you service

Kalle Tuominen

Timi Talliniemi
sales / purchases

Ville Tuominen
technical sales

Santeri Viitala
technical sales


At Top-Osa, we custom-design and custom-make
seals to meet your unique needs

© 2018 top-osa ltd. All rights reserved.


Pyrynkatu 6,
33900 Tampere, Finland

Top quality from Top-Osa

We offer our customers the largest stock of industrial maintenance products in Finland. The products and brands are from leading companies in Europe and appreciated through out the world.

Our warehouse is based in Finland, which gives us the opportunity to deliver the products without You having to wait for them for days, weeks or even months. If the product you need isn’t standard sized, do not worry. We manufacture Seal Jet seals, that allow you to have exactly the right sized seal in matter of hours. In best case we are able to hand you the product within the very same day.

Our other products contain a broad selection of the finest tools and other industrial machinery, ie. Facom hand tools. Please contact us for more information via phone, email or offer request form. We will be happy to be your partner considering ergonomic, well known, quality industrial maintenance products.