EN 546.1 Dome Shaped Plastic Fluid Level Sight Glasses Technopolymer Plastic, resistant to 212° F (100° C)


ELESA original design
code: HCFE

Product description


EN 546.1 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.

Because of the high strength of the material (considerably stronger than, for example, Plexiglass), these sight 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. Full details regarding torque available upon request.

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)
  • tampoprinted RED circle for oil level check
  • Resistant to aging, not alcohol resistant

  • NBR rubber (Perbunan)

RoHS compliant


GN 543.1 nuts

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EN 546.1 Technopolymer Plastic Dome Shaped Plastic Fluid Level Sight Glasses, resistant to 212° F (100° C)  sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
d1d2d3d4l1l2s recommed
tightening torque
in Nm
.75G 1/ ... 6
.98G 3/ ... 8
1.22G ... 10

Build & Price

Window glass d1
Thread d2

Selected Part

Total USD (net)
In stock: 93
In stock
Please note our quantity discounts (USD).
≥ 250$3.31
Weight: 0.011 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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