DONIT TESNIT d.d. company was started as early as 1946, when the original factory for gasket manufacture was put into operation. DONIT TESNIT of today ranks among the world`s largest producers of compressed sealing materials.

The company is located at Medvode, close to Ljubljana, the capital of Slovenia, 15 km from the international airport and 150 km from international cargo port of Koper. It boasts excellent road links with the neighbouring countries of Italy, Austria, Hungary and Croatia.

The company has always pursued an export-orientated policy, so that a range of its products has found customers on all continents. Our products enable us to develop broad range of new non-asbestos products.

Employees
    205 workers, of whom fifteen percent have full university education.

Production programs

• Calandered non-asbestos materials
• Composite sealing materials for automotive and industrial application
• Flexible graphite sealing materials
• Non-metallic flat-flange gaskets for industrial application
• Spiral wound gaskets
• Metal jacketed gaskets
• PTFE sealing products

Quality Assurance and Approvals
   ISO 9001
    DVGW, Germany
    BAM, Germany
    SVGW, Switzerland
    WRC, United Kingdom
    KTW, Germany
    HTB, Germany
    Germanischer Lloyd

Customers Support
    We are always available to our customers and our staff will be pleased to assist you in finding the optimum sealing solution.

Testing facilities
    DIN 28090 DIN 52910
    DIN 52913 DIN 3535
    ASTM F36 ASTM F146
    ROTT TEST
Analytical methods: TGA, TMA, DSC, GC, LC, FTIR, and NMR

tel. +386 61 182 32 00
fax: +386 61 1823206, 1823208