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Custom Sight Glass Manufacturer

OEM/ODM Manufacturing | by Alex Ivashenko | February 23, 2026
A collection of sight glass far-out-projects. From IR to UV, hot and cold.
A collection of sight glass far-out projects. From IR to UV, hot and cold.

See Life Beyond (Pressure) Boundaries


We, the people, are mired in the realities of modern industrial systems. We make the best of it. Now, narrow that down to industrial process control and observation—visual confirmation is not a luxury; it is a design requirement. Whether monitoring phase change, flow behavior, contamination, or mechanical motion, sight glasses provide the only direct, real-time confirmation of what is happening inside sealed environments. As operating pressures, temperatures, and chemical interactions continue to rise, off-the-shelf sight glass solutions increasingly fall short.


This is where a custom sight glass manufacturer becomes essential.


Encole designs and manufactures sight glass technologies that push beyond traditional pressure boundaries, enabling engineers to see clearly inside systems that were previously considered opaque, inaccessible, or too extreme for optical access.


Sight Glass Technologies Designed for OEM and ODM Applications


OEM and ODM applications rarely fit standardized components. Envelope constraints, unique pressure ratings, non-standard sealing interfaces, optical requirements, and regulatory considerations all demand customization at the component level.


Encole specializes in developing sight glass assemblies tailored specifically to system-level requirements, including:



Rather than adapting system designs to fit a catalog part, Encole adapts the sight glass to fit the system.


Engineering Beyond the Window


A sight glass is not just a transparent disk—it is a pressure-bearing structural element. Optical clarity, mechanical strength, sealing integrity, and long-term reliability are tightly coupled. Small design choices in geometry, surface finish, crystal orientation, or mounting method can dramatically affect performance and failure modes.


Encole’s custom solutions consider the full engineering stack:



This systems-level approach allows Encole to deliver sight glass assemblies that perform reliably at the limits of pressure, temperature, and duty cycle.


A Glimpse into Encole Custom Solutions


Encole works closely with engineers from concept through production. Custom programs typically begin with an application review—pressure ratings, environment, optical needs, lifecycle expectations—followed by material selection, mechanical design, and validation testing.


Capabilities include:



The result is not just a component, but a validated optical interface that integrates seamlessly into the customer’s system architecture.


Seeing What Matters


As systems become more compact, more powerful, and more tightly sealed, direct visual access becomes increasingly valuable. Custom sight glasses enable engineers to verify assumptions, monitor critical processes, and design with confidence—even under extreme conditions.


Encole exists to make the invisible visible.