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.


22/09/2014 16:13

Feedthrough - NW63CF, 5-10kV, Pins

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

Read more


08/11/2013 06:46

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

Read more


22/07/2013 14:31

Insulator ID 9[20] - W-2020-191.10

Voltage DC:                  >10kV Tube:                            ...

Read more


15/05/2013 06:23

Viewport VD 24[1,6] - YAG:Ce (NW35CF)

Read more


03/05/2013 08:50

Viewport - NW35CF


Read more



Alumina Systems s.r.o.

Kladska 916/65
Hradec Kralove

+420 495 407 549