NPT Sight Window: Fused Quartz sealed into Stainless 316 Housing
 
  • Housing Material: 316 stainless steel
  • Window Material: Fused quartz, optically clear
  • Temperature operating range: 0 Kelvin to 900C
  • Pressure safety factor: Minimum 2x
  • Abrasion resistance and strength: Good
  • Thermal shock resistance: Excellent
  • Optical transmission: Deep UV thru visible to mid-IR
  • Leak Rate: 10-8 bar-CC/sec. for air at 22C
  • Chemical resistance: Excellent but must be tested for specific chemicals

Rayotek has engineered a unique Sight Window for applications that involve exposing your Sight Window to extreme temperatures, thermal shock and chemically aggressive environments. Rayotek fused quartz, gasket sealed Sight Windows will allow you to cycle or operate continuously to cryogenic temperatures up to 900C without compromise to the clarity of the window or its seal. Rayotek fused quartz Sight Glasses are used in extreme applications such as engine exhaust systems, furnace and incinerator flues, pyrometry and combustion chambers. Please contact the Rayotek Sight Window engineering team for more details and assistance with your application.

For higher temperature requirements up to 1900C, see our Custom Sight Window page.


Click on Part Number for Drawings, Purchase & Volume Pricing.


NPT PIPE SIZE
(in)
CLEAR APERTURE
(in)
CLEAR APERTURE (mm)
MAX PRESSURE (psi/bar)
EXTERNAL INTERNAL VACUUM
HEX SIZE (in)
HEX SIZE (mm)
PART NUMBER
1/4
0.14
3.6
150/10
EP, IP, VAC
0.69
17.5
3/8
0.23
5.8
150/10
EP, IP, VAC
0.81
20.6
1/2
0.34
8.6
150/10
EP, IP, VAC
1.00
25.4
3/4
0.56
14.2
150/10
EP, IP, VAC
1.38
35.1
1
0.71
18.0
150/10
EP, IP, VAC
1.63
41.4
1 1/4
1.07
27.2
150/10
EP, IP, VAC
2.00
50.8
1 1/2
1.22
31.0
150/10
EP, IP, VAC
2.25
57.2
2
1.51
38.4
150/10
EP, IP, VAC
2.75
69.9
2 1/2
1.96
49.8
150/10
EP, IP, VAC
3.50
88.9
3
2.00
50.8
150/10
EP, IP, VAC
4.00
101.6
4
2.59
65.8
150/10
EP, IP, VAC
4.75
120.7


Contact Rayotek Sales for higher volume price discounts and UHP (10,000PSI) brazed sapphire Sight Windows

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