About us

KTT Sealing Technologies has been serving its partners for more than 40 years

Since our establishment, we have grown to a company with over 100 employees, serving more than 2000 satisfied customers in 20 countries around the world with great precision and expertise. Our activities cover both manufacturing and trading. (See also: company history)

As a manufacturer

Our company is the only Hungarian manufacturer of shaft seals, offering a wide range of sizes of all structural materials used. Our products are used worldwide by various automotive and mechanical engineering companies for OEM installation, as well as by seal distributors for installation as spare parts.

We source our raw materials exclusively from the best manufacturers in the European chemical industry. Our shaft seals comply with DIN 3760. Each part is subjected to a thorough final inspection. Our production is carried out under a certified ISO 9001:2015 quality management system.

We also manufacture customized technical rubber goods. (See also: manufacturing).

As a distributor

KTT Ltd. is the Hungarian distributor of the original Simrit Simmerring shaft seals and MERKEL hydraulic seals of FREUDENBERG. We can ship almost two thousand types of the original blue coloured German Simmerring with same day delivery, including a large selection of metal housing or pressure resistant designs. In addition, we also stock hydraulic seals from MERKEL, a long-established company also owned by Freudenberg.

In addition to our seal rings, we stock over three thousand metric and coll sizes of German NBR and FPM (Viton) O-rings. We can deliver these products within two days or prepare them for collection on request. (See also: distribution).

KTT is Your professional partner in sealing technologies

  • 40 years experience in rubber and sealing industry
  • Design-in solutions to ensure best service
  • Own tool shop to shorten sample lead times
  • Certified by ISO9001, following IATF16949 rules
  • Quality without compromise – 100% control
  • Complete portfolio available via webshop
  • Excellent sales service for order management
  • Highest flexibility in lead times
  • Continuous improvement of our services



For furhter information, please check our news.

If you have technical questions or need related information, please check technical information

KTT Sealing Technologies is currently the only manufacturer of sealing elements in Hungary that offers a wide range of sizes for all types of oil seals made of all widely used elastomer materials.

Our main activities are the production of oil seals as well as, the wholesale and retail sale of oil seals, O-rings, hydraulic seals, mechanical and technical assembly goods.


KTT Kubinszky Sealing Technologies Ltd.
9400 HUNGARY, Sopron, Besenyő str. 24/B.
Local Tax number: 11462390-2-08
EC VAT Number: HU11462390
Phone: +36 99 / click
E-mail: click
Monday–Friday: 9.00–16.00

Inventory information

The stock information on the webshop is real and constantly updated. We regularly expand our range based on customer demand.

If you are looking for special rubber products, contact us – KTT is your professional partner in sealing technology.

The KTT Kubinszky Sealing Technologies Ltd
is part of the Axel Johnson International Group.




Our references

BorgWarner, Bosch, Festo, Grundfos, Caterpillar, KUKA Robotics, Electrolux