VTC in the Czech Republic
has been specialised in vacuum technology components 
since 2008 
ceramics, flanges, special parts, 
brazing, welding, plating, metalizing
VACUUM TECHNOLOGY will introduce innovations to you.



    Vacuum is space that is devoid of matter. The word stems from the Latin adjective vacuus for "vacant" or "void". 

An approximation to such vacuum is a region with a gaseouspressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum.



is since year 2012 in group LAPP INSULATORS ALUMINA
Our business unit LIKE creates innovations for you.






In vacuum technology, completely vacuum-tight seals are vital, coupled to the excellent  insulation offered by ceramics and high level of dielectric strength. LAPP Insulators Alumina offers a wide-ranging programme of standard vacuum feedthroughs to match your needs, whether that be controlling, measuring or directing energy. LAPP Insulators Alumina draws on long years of experience and high levels of know-how in this field. We are your most reliable partner for your special applications and requirements too – guaranteeing our customers quality, reproducibility and satisfaction.


Product capabilities

 LAPP Insulators Alumina offers a variety of conductive materials for the manufacture of vacuum feedthroughs such as non-magnetic copper (OFHC) or nickel. Feedthroughs are capable of working at temperatures of between -150°C and +450°C. By using high temperature braze, even higher operating temperatures of over 600°C can be achieved. Surface resistance of the glazed ceramic surface measured against a 5kV DC voltage exceeds 1x1012 ohms. Vacuum feedthroughs from LAPP Insulators Alumina are routinely tested to leak rates of 10-8 mbarL/s. On application we can test to 10-9 mbarL/s. The components’ electrical properties such as maximum voltage and current loading are measured in air; so considerably higher values apply under vacuum. Vacuum technology has been another application for FEM analysis at LAPP Insulators Alumina since 2013. This computer-aided design analysis offers our customers made-to-measure, intelligent solutions. The decisive advantage lies in reduced development times for the absolute optimum design at considerably lower cost, even at the prototype phase. LAPP Insulators Alumina develops components hand-in-glove with customers to series production launch, drawing on the considerable expertise of their in-house research and development department, “LIKE



    Alongside standardised component ranges, a division of LAPP Insulators in Germany LAPP Insulators Alumina GmbH produces diverse alternative solutions in ceramic-to-metal, carefully matched to individual customer concepts. To minimise the development period for new ceramic-to-metal components LAPP Insulators Alumina utilises the Finite Element Analysis development tool (FEM for short) to support new product design. Specially for the design of ceramic components, we have a state-of-the-art component break statistical predictive tool. This is capable of rapidly comparing component design variants so that the most robust mechanical design can be chosen before moving to the prototype build stage. Prototype quantities are minimised, resulting in cost savings and project development periods reduced by several weeks. In contrast, simulation testing requires one to two weeks.


    LAPP Insulators Alumina develops components in tandem with their customers to series manufacture. We are also pleased to consider commissions from third parties. The costs for a simulation typically lie well below those of tooling for samples. Static and transient thermodynamic calculations are applied, while LAPP Insulators Alumina can draw on the resources of the group research team "LIKE" for magneto-electrical calculations.



You are WELCOME!

E-shop for you.

We  have had a long tradition in the manufacture of technical ceramics. Our wide product range covers a variety of complex standard as well as tailor-made designs from sintered alumina rings for vacuum technologies, vacuum-tight joints, brazed insulators, bushings, metallised ceramic parts, to housings for power semiconductors, etc.

Feel free to challenge us with your complex designs.

Our engineering will be happy to help you resolve your technical solutions. 



Insulator 4013 - 60kV, ConFlat NW160CF

21/08/2016 12:58
Voltage DC:                       >60kV Tube:          ...
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VACUUM EXPO 2015 in Coventry (UK)

20/10/2015 08:59
On 14.10.2015 we visited Vacuum Expo in Coventry to see the progress of the industry in the last few years. We came...
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Vacuum Insulators - www.vacuumtechnology.cz

24/09/2015 08:04
                       Vacuum insulators consist of special ceramics...
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14/09/2015 15:11
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457 4003 40W

02/09/2015 07:39
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Insulator 4009 - 35kV, Weldable

20/02/2015 15:12
  Vendor: LAPP Insulators Alumina s.r.o.     Insulator 4009 -...
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E-shop has launched..

22/10/2014 15:45
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