We are specialised in metal-to-ceramics vacuum tight joints and technical ceramics for a number of industries. Our current focus is vacuum technology with our vacuum insulators.

Looking forward to your RFQs. We will be with you within 24 hours.









W E   P O W E R   T H E   F U T U R E


Manufacturing of Al2O3 technical ceramics for complex applications.
Glass or ceramics to metal hermetic seals. 

We have a long tradition in developing complex standard as well as custom-made designs i.e. sintered alumina rings for vacuum technologies, brazed vacuum-tight joints, insulators, bushings, metallised ceramic parts, housings for power semiconductors, and many others.


LAPP Insulators Alumina s.r.o. is part of Alumina Redwitz Holding GmBH



Staff: 45
Contact person: Michal Rufert, CEO, mrufert@lappinsulators-alumina.com


We are prepared to look for the best solution in your cost reduction plans or any design requirements.

Our process engineers will provide expert solutions.

We work with renowned technical universities in the European Union.

 We will support your requirements with our 3D vision that can be turned into a printed prototype within 24 hours.


17/07/2016 12:46

Brochure update for 2016

We will provide you with latest technologies - such as 3D printing of ceramic parts, parts for vacuum systems and signal processing. lapp-insulators-alumina-flyer-2016-eng.pdf (1,7...

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17/07/2016 12:32

New products for vacuum technology

We are in contact with technical institutes and universities within the EU and provide them with vacuum technology solutions - high purity materials and high stress - temperature,...

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18/04/2015 11:44

Vacuum-tight products based on ceramic housing

We supply ceramic substrates, vacuum-tight products, housings for semiconductors, vacuum insulators, breaks, housings We are based in the Czech Republic, 100 km east of Prague.

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22/09/2014 16:13

Feedthrough - NW63CF, 5-10kV, Pins

Voltage DC:                  5-10kV Materials:                      1.4301, Kovar,...

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08/11/2013 06:46

Products of LAPP Insulators Alumina s.r.o. - clip

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LAPP Insulators Alumina s.r.o.

Kladska 916
Hradec Kralove

+420 495 407 549