Sightglasses for Tri-Clamp Openings

An assembly of Pyrex® or borosilicate glass and platinum-cured silicone gasket that fits into a stainless steel tri-clamp ferrule adapter piece.

Size D1 D2 H
Tri-Clamp Size in mm in mm in mm
1/2" & 3/4" 0.39 10 0.71 18 0.41 10.5
1" & 1-1/2" 0.98 25 1.61 41 0.28 7
2" 1.18 30 2.05 52 0.28 7
2-1/2" 1.38 35 2.72 69 0.39 10
3" 1.57 40 2.99 76 0.39 10
4" 2.17 55 4.02 102 0.47 12
6" 2.87 73 5.98 152 0.63 16
8" 3.94 100 7.80 198 0.63 16
10" 4.72 120 9.65 245 0.71 18
12" 5.51 140 11.81 300 0.79 20


Slotted Sightglasses

Slotted sightglass for easy attachment of a cordless tank illuminating device. 4˝ slotted sightglass allows for viewing with the light attached.


Cordless Tank Illuminating Device

  • Detachable, high performance 120 lumens - LED Cordless Tank Illuminator
  • 316L construction making it corrosion and moisture resistant
  • Includes two CR123 3V batteries