Customized fused quartz

About QSIL

QSIL is a leading producer of fused quartz products, which are sold under the trademark ilmasil® and PH.  Its products are widely supplied throughout the global market from the factories in Germany and The Netherlands. The sole focus of QSIL is the manufacture of fused quartz. This covers the raw material treatment, the fusion of heavy wall cylinders, the manufacturing of small and large diameter tubes, and the fabrication of customized products.

With many years' experience in the melting and fabrication of fused quartz, as well as having state of the art processing technologies and quality control equipment, QSIL has unique capabilities to supply our customers with products of the highest quality. As a result, QSIL materials have been certified by leading OEMs.

Our worldwide customer base relies on the quality and performance they receive from QSIL’s products. QSIL’s main objective is to supply products which bring the highest level of value to our customers.

Ilmenau

QSIL AG
group headquarters 

QSIL GmbH Quarzschmelze Ilmenau
production

  • Plasma fusion facilities
  • Two-Step drawing tower
  • Manual & machine-assisted fabrication

Winschoten

QSIL Nederland B.V.
production

  • Single-step drawing facilities
  • Special Glass furnaces

Milestones

2016
QSIL acquires the PHILIPS fused quartz and special glass operation in the Netherlands

2015
Launch of QSIL’s Premium Material ilmasil® PQ

2014
ISO 50001 certification of energy management system

2013
QSIL acquires all business operations and assets of Silicaglas Ilmenau GmbH (SGIL). 

2012
Expansion of production facilities and launch of re-flowing technology

2008 
Expansion of facilities with new production building

Launch of new laboratory for chemical analysis

2007
Relocation of QSIL Corp. to Fremont (CA)

2003
Establishment of US-affiliate QSIL USA

2002
Expansion of facilities with a new fabrication building

1998
ISO 9001 certification of quality management system

1996
Launch of new production plant in Langewiesen near Ilmenau

1994
Privatization by Management-Buy-Out

1992
Establishment of QSIL GmbH through the spin-off of the quartz glass division of Ilmenauer Glaswerke GmbH

1977
VEB Kombinat Technisches Glas Ilmenau starts industrial production of fused quartz glass

1960
Center for manufacturing of technical glasses established in Ilmenau 

1892
Fused quartz is manufactured for the first time