Products | J.W. Winco Standard Parts

EN 543.4 Fluid Level Sight Glasses Plastic, with Prismatic Reflector, resistant to 284° F (140° C)


ELESA original design

code: HGFT.HT-PR

Product description


EN 543.4 Elesa® original design technopolymer plastic fluid level sight glasses.
Resistant to solvents, oils, grease and other chemical agents.

Window consists of a continuous series of prisms which offer a clear oil reading. It is embedded when spraying the housing and is therefore completely leak free.
Seal is embedded in a radial undercut and will not extrude during tightening.
A moderate torque (not exceeding 3-12 Nm) is recommended when tightening oil level indicator so as to guarantee optimal tightness without any elastic deformation. Full details regarding torque available upon request.

Maximum continuous working temperature at 7 Bar pressure: 284°F (140°C).

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


Technopolymer (Polyamide PA)
  • black, matte
  • temperature resistant up to 284° F (140° C)

Sight glass
Plastic Polysulfon
  • pressure resistant up to 7 bar

FPM rubber (Viton®)

RoHS compliant


GN 543.1 nuts

Technical drawing

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EN 543.4 Plastic Fluid Level Sight Glasses with Prismatic Reflector, resistant to 284° F (140° C) sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
Pipe Thread
0.59G 1/21.100.390.330.94
0.71G 3/41.380.390.331.26
0.91G 11.690.430.371.50

Build & Price

Window glass d1
Thread d2

Selected Part

Total US Dollars (net)
In stock: 7
In stock
Please note our quantity discounts (US Dollars).
≥ 250$5.89
Weight: 0.013 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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