Емкостекло.Sight glasses for industrial vessels
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Components: discs, seals, lights, wipers

Replacement glass discs, seals, lighting, wipers and glass protection for sight glass fittings.

Technical review: 2026-11-04

Components define the actual behaviour of a fitting no less than its body: the disc sets the view and the temperature ceiling, the gaskets set medium and washing compatibility, lighting and wipers set visibility in the real process.

The category explains the classes of components and what to clarify at replacement. Cards of specific products are published only with documentally confirmed data.

What belongs to this category

  • Replacement circular discs (borosilicate per DIN 7080, soda-lime per DIN 8902 in applicable versions).
  • Medium-contact and compensating seals: PTFE, EPDM, FKM, graphite.
  • Lights, wipers, protective glasses, washers.

What does not belong here

  • Complete fitting bodies (categories “Weld-in” and “Flange-mounted”).
  • Laboratory glass and household portholes.
  • Components without documented materials and dimensions.
Diagram of component composition: disc, two gasket types, light, wiper
Classification diagram, not an installation drawing.

How to choose components

  1. Step 1

    For a disc: measure the outer diameter, thickness and shape; verify the material from the fitting marking or documentation.

  2. Step 2

    For gaskets: record the medium, temperature, CIP/SIP modes — the material is chosen for the conditions, not by habit.

  3. Step 3

    For lights and wipers: check compatibility with the body of the specific fitting and the area (Ex zone, if any).

  4. Step 4

    Enter all dimensions and materials into the RFQ sheet — it speeds up manufacturer confirmation.

Series and constructions of the section

The category relies on the DIN 28120 and DIN 28121 series: components are verified for compatibility with a specific fitting.

DIN 7080 borosilicate glass: scope and limitsReferencePTFE, EPDM, FKM, graphite gaskets: what must be clarifiedReferenceHow to replace a glass disc: what to measure and which documents are neededReferenceWhen a sight window needs lightingReferenceWipers and washing when the medium fouls the glassReference

Engineering services

Approximate disc massThe tools never send your inputs to a server or to analytics.View areaThe tools never send your inputs to a server or to analytics.Vendor RFQ sheetThe tools never send your inputs to a server or to analytics.

Sources

Values without a confirmed source are not published on this site.