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Round Sight Glass Disc with Center Hole (10.5 mm)
Round sight glass discs with a precision 10.5 mm center hole for industrial process observation systems. Available in borosilicate, soda lime, aluminosilicate and quartz glass for pressure vessels, pipelines and sight glass fittings. Ground and polished edges ensure reliable sealing and long service life.
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Technical data
Round Sight Glass Disc with Center Hole (10.5 mm) Overview
The Round Sight Glass Disc with Center Hole is specially designed for industrial sight glass assemblies requiring a central opening for wipers, sensors, probes, or auxiliary equipment. Manufactured from high-quality borosilicate glass, soda lime glass, aluminosilicate glass, or fused quartz, these sight glass discs provide excellent transparency, mechanical strength, and resistance to thermal shock.
The standard center hole diameter is 10.5 mm, while custom hole sizes can be manufactured upon request. All discs are precision ground and polished to ensure optimum sealing performance and clear process observation.
These sight glass discs are widely used in pressure vessels, reactors, storage tanks, pipelines, pharmaceutical equipment, food processing systems, chemical plants, and water treatment facilities.
Custom dimensions, thicknesses, edge finishes, and materials are available according to customer specifications.
Why Choose Our Sight Glass Disc
High Optical Clarity
Provides a clear view of liquid level, flow conditions, mixing processes, and equipment operation.
Multiple Material Options
- Borosilicate Glass
- Soda Lime Glass
- Aluminosilicate Glass
- Fused Quartz Glass
Precision Center Hole
Standard 10.5 mm hole for wiper systems and instrument integration.
Excellent Temperature Resistance
Suitable for demanding industrial environments.
Custom Manufacturing
Available in custom diameters, thicknesses, hole sizes, and edge finishes.
Round Sight Glass Disc with Center Hole (10.5 mm)— Technical Data
| Parameter | Specification |
|---|---|
| Product Type | Round Sight Glass Disc |
| Hole Diameter | 10.5 mm (Standard) |
| Outer Diameter | 20 – 420 mm |
| Thickness | 3 – 30 mm |
| Material | Borosilicate, Soda Lime, Quartz, Aluminosilicate |
| Surface Finish | Ground / Polished |
| Shape | Circular |
| Standard | DIN 7080 / DIN 8902 |
| Custom Sizes | Available |
Round Sight Glass Disc with Center Hole (10.5 mm)—Drawing
Dimensions — Round Sight Glass Disc with Center Hole (10.5 mm)
| Dimension D x s (mm) | Viewing Diameter di (mm) | Nominal Pressure (bar) |
|---|---|---|
| Other dimensions on request | ||
| Soda lime glass, material acc. to DIN 8902 – up to 150°C | ||
| 63 x 10 | 48 | 6 |
| 80 x 12 | 65 | 6 |
| 94 x 121) | 801) | 6 |
| 100 x 15 | 80 | 6 |
| 113 x 151) | 1001) | 6 |
| 125 x 15 | 100 | 6 |
| 141 x 151) | 1251) | 6 |
| 150 x 15 | 125 | 5 |
| 166 x 151) | 1501) | 4 |
| 175 x 15 | 150 | 4 |
| 200 x 15 | 175 | 4 |
| 225 x 15 | 205 | 2 |
| 250 x 15 | 225 | 2 |
| Borosilicate glass, material acc. to DIN 7080 – up to 280°C | ||
| 63 x 10 | 48 | 6 |
| 80 x 12 | 65 | 6 |
| 94 x 111) | 801) | 6 |
| 100 x 15 | 80 | 6 |
| 113 x 151) | 1001) | 6 |
| 125 x 15 | 100 | 6 |
| 141 x 151) | 1251) | 6 |
| 150 x 19 | 125 | 6 |
| 166 x 151) | 1501) | 6 |
| 175 x 19 | 150 | 6 |
| 200 x 19 | 175 | 4 |
| 225 x 15 | 205 | 2 |
| 250 x 25 | 225 | 4 |
KEY FEATURES
Thermal Stability
High resistance to thermal shock for extreme temperature environments
High Mechanical Strength
Suitable for pressure-loaded industrial systems
Chemical Resistance
Stable performance in corrosive chemical environments
Excellent Transparency
Clear visibility for process monitoring
Precision Manufacturing
Accurate dimensions and polished sealing surfaces
Custom Design Support
OEM / ODM customization available
Custom Manufacturing Service
We provide tailor-made solutions according to drawings or technical requirements.
- Custom diameter
- Custom thickness
- Special pressure design
- Edge polishing
- Optical finishing
- OEM / ODM support
- Custom packaging
TYPICAL APPLICATIONS
- Pressure Vessels
- Chemical Reactors
- Boilers & Steam Systems
- Pipeline Sight Glass Assemblies
- Pharmaceutical Equipment
- Food & Beverage Processing
- Industrial Observation Ports
FAQ
A: The center hole is commonly used for mounting wipers, sensors, probes, or special accessories while maintaining visibility inside the vessel.
A:Fused quartz glass provides the highest temperature resistance, while borosilicate glass is the most commonly used solution for industrial sight glass applications.
A: Yes. Custom diameters, thicknesses, center hole sizes, and edge finishes are available.
A: Yes. All sight glass discs are supplied with precision ground or polished edges for reliable installation.
A: Yes. Anti-reflective, conductive, and other special coatings can be provided upon request.
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