GN 743 Fluid Level Sight Glasses Aluminum, With Natural Glass, resistant up to 212° F (100° C)


GN 743 Aluminum Fluid Level Sight Glasses, With Natural Glass, resistant up to 212° F (100° C) Type: A - with contrast screen, blank

Product description


GN 743 Fluid level sight glasses offer the following features:
1. Genuine 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. 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. The location of this seal allows also the softer elastomer which guarantees better and easier sealing.

GN 743.1 Fluid level sight glasses can be used on pressurized oil tanks. Tests regarding maximum pressure are available upon request.

Sight glasses can be ordered with or without a reflector.

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


Sight glass body
  • Aluminum
  • turned, with matte shot-blast finish

Sight glass
  • Natural glass

  • NBR rubber (Perbunan)
  • Maximum heat resistance: 100°C (212°F)

  • Heat resistant technopolymer plastic (Polysulfon)


Fixing nuts GN 543.1

Technical drawing

Hide technical drawing
GN 743 Aluminum Fluid Level Sight Glasses, With Natural Glass, resistant up to 212° F (100° C) sketch

Part Options / Table


Awith contrast screen, blank
Bwithout contrast screen, blank
Show / Hide columns


Dimensions in: Inch | Metric
Pipe Thread
.28G 1/4M 14 x 1.5-.
.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-
1.26G 11/4M 40 x 1.5M 42 x
1.26G 11/2--

Build & Price

Window glass d1
Inch thread d2
Fine thread d1

Selected Part

Total USD (net)
In stock: 0
Call / Email for Delivery Time
Please note our quantity discounts (USD).
≥ 250$8.42
Weight: 0.019 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: -
This article does not conform to RoHS.
For RoHS conforming alternative products, please contact our Sales Department!
Phone +49 7723 6507- 0
All Prices are in US Dollars. Taxes Not Included.

CAD data

Quick Download

To download CAD data without creating an account, please enter your e-mail address. Max of 3 CAD downloads per day unless you create an account.

Please enter the code you can find in the picture.

Save as Favorites

Please enter the code you can find in the picture.

Need Help?

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

Special Requests | Contact our sales team

This could also be interesting...

JW Winco - Contact

United States
Phone: 800-877-8351
Fax: 800-472-0670
Hours M-F 7:30 AM - 5:00 PM CT

Request Callback:

Privacy Policy

Request a Catalog

Request one of our many catalogs! For an overview of our products request the Product Overview Catalog (POC).

Request Free Catalogs

Sales Contacts

You are looking for a Winco partner near you? Please select the country.