GN 743


  • Type A: with contrast screen, blank
  • Type AS: with contrast screen, black anodized
  • Type B: without contrast screen, blank
  • Type BS: without contrast screen, black anodized



  • Type A and B: fine turned, blank
  • Type AS and BS: fine turned, black anodized

Contrast screen

Technopolymer (Polysulfon)

  • temperature resistant up to 100 °C
  • Sight glass Float-glass
  • Sealing ring rubber NBR (Perbunan)

Oil level sight glasses GN 743 offer genuine glass of high stability and scratch proof. The sealing is achieved with an O-ring on the periphery and not on the face edge of the glass. Leak tightness is therefore not affected by axial pressures.

The outside diameter of these oil level sight glasses with recessed hexagon is chosen to match mounting holes for tube connections according to DIN 3852.

The seal is housed in a groove and it can therefore not be lost. In addition, this groove prevents the seal from being extruded when the sight glass is tightened.

Oil level sight glasses GN 743 can be used on pressurised oil tanks. Tests regarding maximum pressure are available on request.

Assembly instruction:

For mounting on walls of less than 4 mm thickness please use a fixing nut  GH.-.

  • RoHS compliant (only types AS and BS)

  • Fixing nut GH.

  • EPDM seal


Feeling overwhelmed with what product to choose?

Don’t delay, give OIC a call and talk to us about your industrial application. Our aim is to help your business choose the right Elesa+Ganter element for the function you need. Whether you need to clamp, close, connect, control, level, manoeuvre, measure or set. OIC has an Elesa+Ganter machine element to fit your need.

We want to find out about your industrial application need and where we can help. Our contact details are below.