Products | J.W. Winco Standard Parts

EN 546 Dome-Shaped Fluid Level Sight Glasses Technopolymer Plastic, resistant to 212° F (100° C)


ELESA original design
code: HCFE.

Product description


EN 546 Elesa® original design technopolymer plastic dome-shaped fluid level sight glasses.
Mainly used as oil circulation indicators.

Practically indestructible; even if high torque is applied there is no danger of breakage.

Resistant to aging, not alcohol resistant.

Because of the high strength of the material (considerably stronger than, for example, Plexiglass), these site glasses can be produced with much thinner walls, resulting in clearer visibility. The ratio between bore diameter and the viewing window is much improved.
A moderate torque (not exceeding 3-12 Nm) is recommended when tightening oil sight glass so as to guarantee optimal tightness without any elastic deformation.

Assembly instruction:
For mounting on walls of less than 4 mm thickness please use a GN 543.1 nut.


Sight glass
  • Special transparent polyamide technopolymer plastic (PA 6-T)

  • NBR rubber (Perbunan)

RoHS compliant


GN 543.1 nuts

On request

Full details regarding torque available

Technical drawing

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EN 546 Technopolymer Plastic Dome-Shaped Fluid Level Sight Glasses, resistant to 212° F (100° C) sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
Pipe Thread
tightening torque
in Nm
0.59G 3/80.890.300.510.753 ... 5
0.75G 1/21.020.410.630.874 ... 6
0.98G 3/41.240.410.771.066 ... 8
1.22G 11.650.430.941.428 ... 10
1.50G 11/41.830.451.041.5912 ... 15

Build & Price

Window glass d1
Pipe Thread d2

Selected Part

Total US Dollars (net)
In stock: 31
In stock
Please note our quantity discounts (US Dollars).
≥ 250$2.52
Weight: 0.007 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: Yes
This article conforms to RoHS, which means it complies with EU Directive 2011/65/EU for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
All Prices are in US Dollars. Taxes Not Included.

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