Quartz Mountings

Fused Quartz Tubes, Compression Fittings | Metal Threaded Fittings


Fused Quartz tube and tubing are made by fusing or melting, naturally occurring quartz crystals. The crystals used are of a very high purity. This process takes place at 3632°F or 2000°C. This requires using high temperature furnace. Fused quartz tube and tubing is normally a transparent. The optical and thermal properties of fused quartz is far superior to those of other types of glass. This is due to its very high purity.


Fused quartz is used in ultraviolet transmission, clear lens, and other optics for the ultraviolet spectrum. Quartz has low coefficient of thermal expansion. This makes it a useful material for precision mirror substrates. Thermocouple protection tubes are also made from fused quartz. Quartz protection tubes are excellent for molten precious metal applications.

Mountings and Fittings

To make mounting quartz tubes a little easier we offer a variety of metal fittings. Many tubes can be ordered with stainless steel compression fittings. We can also cement on threaded close nipples as well as double threaded fittings. Hex fittings are 1/2" x 1/2" NPT or 3/4" x 3/4" NPT threads. See the table below.


  • QZ Series Quartz Tubes In Left Column - Closed One End
  • QT Series Quartz Tubing In Right Column - Open Both Ends
  • Very Low Coefficient of Thermal Expansion
  • Resistance to High Temperature
  • High Chemical Purity
  • Optical Clarity
  • Excellent Electrical Insulation Qualities
  • Other Sizes, Square Tube, and Stirring Rod Are Available
  • Stainless Steel Compression Fittings
  • Steel Threaded Fittings (Cemented)
  • Stainless Steel Hex Fittings (Cemented)
  • Close Nipples (Cemented)
  • Extended Nipples (Cemented)
p190 Quartz Mountings Pub 20171016-1
p189 Quartz Mountings Pub 20171016-2
p190 Quartz Mountings Pub 20171017-3
p191 Quartz Mountings Pub 20171017-4

Accessories and Related Products

  • Alumina Protection Tubes
  • Mullite Protection Tubes
  • Zirconia Protection Tubes
  • Nichrome Wire
Quartz Tube and Tubing

Fused Quartz Tubes And Tubing

Coefficient of Thermal Expansion (20°C–320°C) Softening Point Index of Refraction Hardness
5.5 x 10-7 cm/cm °C 1683°C 1.4585 5.5–6.5 Mohs’ Scale