Sealing technology

Sealing technology

No penetration possible with the right seals

It's only when seals become brittle, start leaking or simply no longer work that you realise how important they are. Sealing machine parts is often a difficult task for design and general engineering. We supply wide-ranging seals for abundant applications and purposes.

Seals and gaskets are used everywhere when two or more parts have to be interconnected detachably or tightly, or for rotating shafts or reciprocating rods that are guided through a housing wall, where a faultless and functional seal has to be installed, but seals do much more: they reduce the leakage of liquids such as lubricants, as well as air or gas. Last but not least, seals and gaskets also ensure no foreign matter can contaminate operating media.

Get the right seal quickly and reliably

In our state-of-the-art small parts warehouse we stock a wide range of seals from various manufacturers and made of various materials. We offer a comprehensive range of seals and gaskets for static applications as well as for translational and rotating motion.

The range of static seals includes O-rings, round cords, X-rings and screw seals. The group of rotary motion seals comprises radial shaft seal rings, V-rings and axial seals.

Seals for translational movements include piston seals, rod seals, lip seals and wipers.

Blässinger is »Freudenberg Preferred Partner«

Josef Blässinger GmbH + Co KG reaches the highest level of partnership within just two years and receives the award of »Freudenberg Preferred Partner« of Freudenberg FST GmbH – the world's leading premium manufacturer in sealing technology - on 1 January 2024.

Freudenberg Sealing Technologies FST is a long-standing technology expert and global market leader for demanding and innovative applications in sealing technology and electromobility. With its unique material and technology expertise, FST is a proven supplier of sophisticated products and applications as well as a development and service partner for customers in general industry and the automotive industry.

As a new »Freudenberg Preferred Partner« of Freudenberg Sealing Technologies, we are expanding our extensive product portfolio with innovative sealing solutions and modern mobility applications. Our industrial customers in the maintenance and original equipment sectors benefit from numerous advantages as a result.

Due to our technical expertise and focus on sealing solutions from Freudenberg Sealing Technologies, we have managed to develop into a competent partner for our customers in the field of sealing technology in a very short space of time. Together with our partner, we meet the most demanding requirements on a daily basis.

At our logistics centre in Ostfildern, you will find a comprehensive product portfolio of static and dynamic seals from our strategic partner Freudenberg Sealing Technologies with above-average delivery times and availability for almost all areas of application.

Thanks to our highly qualified sales team, we are available to advise our customers throughout Germany in order to avoid or significantly minimise downtimes or even failures in your production process. Thanks to our regional presence, we can respond flexibly to the requirements and needs of our customers and quickly and effectively identify and standardise seals. We help to select the right seal and support the realisation of projects in the form of prototypes or series parts right from the start.

For many years, Freudenberg Sealing Technologies has relied on regional, strategic partnerships with technical distributors such as Josef Blässinger GmbH + Co. KG, whose eleven locations in Germany ensure short distances in the supply and service chain and personal expertise from our specialists at the customer's site.

Do you still have questions or need further information?

Product range

Sealing technology

Customer-specific production technology

  • Production of drawing parts from elastomeric materials, polyurethanes and thermoplastics
  • Sealing solutions can be produced by turning from suitable materials up to a diameter of 1,500 mm
  • Customer-specific special solutions: Modification of shaft seals and refinement of O-rings by coatings
  • Round cord seals butt-jointed or butt-vulcanised
  • Cutting sealing cords and tapes to length

Further information