The sight glass of fluid sight glasses EN 543.4 is embedded in the body during the injection process and it is therefore absolutely leak tight.
These fluid sight glasses use the prismatic effect of a cat’s eye to give a clear indication of the fluid level unaffected by fluid color or fluid viscosity. The advantage of this effect is particularly obvious in the case of underfilling or overfilling and for inspection under unfavorable light conditions.
The seal is embedded in a radial recess, and thus cannot be squeezed out during tightening.
Assembly note:
For wall thicknesses below 0.16 in (4 mm), use thin hexagon nuts GN 7430.
Beginning April 14, 2025, we will implement a price adjustment. Some items will have a price decrease, while others will increase. The adjustment helps ensure our commitment to providing our customers with the best products and services.
We will honor current published prices through April 13, 2025.
Customers with pricing agreements will not be effected until annual pricing is reviewed.
An error has occurred!
We have received your callback request and will contact you soon.
ELESA original design 
