GN 743.2 Fluid Level Sight Glasses Brass, with Natural Glass


GN 743.2 Brass Fluid Level Sight Glasses, with Natural Glass

Product description


GN 743.2 Fluid level sight glasses offer the following features:
1. Genuine natural glass of high stability and scratch proof.
2. Sealing 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.
3. Outside diameter is chosen to match mounting holes for tube fittings according to DIN 3865.

Seal is housed in a groove and therefore cannot be lost. Meanwhile, this groove prevents the seal from being extruded when the sight glass is tightened. The location of this seal also allows the use of a softer Elastomer, which guarantees better and easier sealing.

GN 743.2 Fluid level sight glasses can be used on pressurized oil tanks. Tests regarding maximum pressure are available upon request. Also, these oil level site glasses are suitable for applications with subpressure.

Sight glasses can be ordered with or without a reflector.

Note: When mounting fluid level sight glasses on walls of less than 4mm thickness, use nut GN 543.1.


Sight glass body
  • Brass, CuZn40Pb2

Sight glass
  • Natural glass
  • Maximum heat resistance 212° F (100° C)

  • Heat resistant technopolymer plastic (Polysulfon)

  • NBR rubber (Perbunan)

RoHS compliant


Fixing nuts GN 543.1

Technical drawing

Technical drawing ausblenden
GN 743.2 Brass Fluid Level Sight Glasses, with Natural Glass sketch

Article options / Table


Awith contrast screen
Bwithout contrast screen
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Dimensions in: Inch | Metric
Pipe Thread
.43G 3/8M 16 x 1.5-.
.55G 1/2M 20 x 1.5-
.71G 3/4M 26 x 1.5M 27 x
.94G 1M 33 x 1.5-

Build & Price

Window glass d1
Pipe thread d2
Thread d1

Selected Part

Total (net)
In stock: 68
In stock
Please note our quantity discounts.
≥ 250$7.50
Weight: 0.041 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: -
This part is new in our product range, no details are available at this time. For more recent details on the RoHS compatibility, please contact our Sales Department!
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time:800-877-8351

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