OPTI-LITE ®

The JDG-105OL increases driver and trailer safety when unloading overnight

JDG-105OL ILLUMINATED SIGHT GLASS

Opti-Lite sight glasses are machined on CNC machining centers and CNC lathes to impart the best optical sight glasses available. They are machined flat on both side walls to keep the sidewall tolerances in line with standard API flanges and meet TTMA specifications. All of our sight glasses are annealed to help reduce cracking and crazing caused by certain fuel additives.

All of our Opti-Lite sight glasses are date coded and part coded JDG-105OL by heat stamp.

Opti-Lite Illuminated Sight Glasses have the following features:

  • Ethanol and Diesel Compatible
  • Super bright high intensity LED
  • Operates on standard 12 volt system
  • 100,000 hour rated LED light
  • Draws only .12 amps
  • LED performance range: -40 Celsius to 70 Celsius
  • Can be wired into control box, junction box or directly into unloading lights
  • Wiring meets SAE J1128 specification
  • Electronics sealed in epoxy to resist corrosion and moisture
  • LED light and wiring is capped with heavy duty heat shrinkable tubing
  • Increases driver and trailer safety for night unloading


PART NUMBERINSIDE DIAMETEROUTSIDE DIAMETERBOLT HOLE CIRCLE(BHC)# BOLT HOLESBOLT HOLE DIA.(BHD)NOMINAL THICKNESSWIRE LENGTH
JDG-105OL33.50"6.50"4.875"80.468"1.500"15'
JDG-105OL3XL3.50"6.50"4.875'80.468"1.500"30'
JDG-105OL4.000"7.075"5.875"80.468"1.500"15'
JDG-105OLXL4.000"7.075"5.875"80.468"1.500"30'