(Aluminosilicate Round Sight Glass)
Product Overview
Aluminum Silicon Round Glass is a carefully made aluminosilicate glass disc. It is used in round industrial sight glasses. These glasses allow for direct viewing of liquids or process media.
Aluminum silicon glass is stronger than standard borosilicate round sight glass. It handles pressure and thermal shock well. It’s ideal for medium to high pressure in power, chemical, and process industries.
This product is commonly referred to as:
-
Aluminum Silicon Sight Glass
-
Aluminosilicate Round Sight Glass
-
Round Level Sight Glass
-
Boiler Sight Glass Disc
Material Technology & E-E-A-T Assurance
We focus on industrial gauge glass and sight glass parts. We have years of supply experience with OEM manufacturers, EPC contractors, and maintenance firms.
We carefully create our aluminum silicon round glass using specific aluminosilicate formulas. We use strict annealing processes. We also check dimensions to ensure each batch is consistent. This consistency is vital for pressure-bearing sight glass applications.
This product designer made it for constant industrial use. It is not for labs or decoration.
Why Choose Aluminum Silicon Round Glass
Higher Pressure Capability
Aluminum silicon (aluminosilicate) glass is stronger than borosilicate glass. This means it’s less likely to break when pressure changes.
Excellent thermal stability
-
Suitable for high-temperature service
-
Better resistance to rapid temperature changes
-
Lower risk of thermal shock failure during startup or shutdown.
Long Service Life
Dense glass structures boost sealing performance with graphite or mica gaskets. This improves operational life and cuts down on replacement frequency.
Typical Sight Glass Assemblies
Aluminum silicon round glass is used in:
-
Flanged round sight glass windows
-
Bolted sight glass covers
-
Pressure vessel observation ports
-
Boiler and steam system sight windows.
-
Reactor and pipeline inspection ports
It works well for making new equipment and replacing old sight glass discs.
Industrial Applications
This product is widely used in:
-
Power plants (boilers, condensate systems)
-
Chemical processing equipment
-
Petrochemical and refinery units
-
Pharmaceutical and fine chemical reactors
-
Water treatment and industrial utilities
-
Marine and offshore systems
Recommended for cases where borosilicate glass often fails from pressure or temperature changes.
Technical Specifications
Material Properties
| Property | Value |
|---|---|
| Glass Type | Aluminum Silicon (Aluminosilicate) |
| Density | ~2.5 g/cm³ |
| Bending Strength | ≥ 150 MPa |
| Continuous Working Temperature | ≤ 350 °C |
| Short-Term Temperature | ≤ 400 °C |
| Thermal Shock Resistance | ≥ 220 °C |
| Light Transmittance | ≥ 90% |
📥 Download Technical Datasheet (PDF)
Pressure & Temperature Rating
When properly installed in certified sight glass frames:
-
Recommended Working Pressure: up to 16 MPa (PN160)
-
Recommended Operating Temperature: ≤ 350 °C
Final pressure rating depends on glass thickness, diameter, gasket type, bolt torque, and frame design. Engineering confirmation is advised for critical applications.
Standard Sizes & Dimensions
Common Aluminum Silicon Round Glass Sizes
| Diameter (mm) | Thickness (mm) |
|---|---|
| 50 | 8 / 10 / 12 |
| 63 | 10 / 12 |
| 80 | 12 / 15 |
| 100 | 15 / 19 |
| 125 | 19 / 22 |
| 150 | 22 / 25 |
| 200 | 25 / 30 |
Custom diameters and thicknesses are available based on drawing or sample.
Surface Finish & Compatibility
-
Precision-ground sealing surfaces
-
Polished transparent viewing area
-
Compatible gasket materials:
-
Graphite gaskets
-
Mica gaskets
-
PTFE composite gaskets
-
Suitable for carbon steel, stainless steel, and alloy steel sight glass frames.
Installation & Maintenance Notes
-
Always replace gaskets when changing glass
-
Tighten bolts evenly in cross sequence
-
Avoid point loading and uneven stress
-
Periodic inspection recommended in high-temperature service
Correct installation significantly improves safety and service life.
Why Buy from Us
-
Industrial-grade aluminosilicate material
-
Stable export quality for OEM & maintenance supply
-
Engineering-level application support
-
Flexible customization for size and thickness
-
Reliable delivery for bulk and long-term orders
We focus on engineering safety, durability, and procurement reliability, not low-grade consumer glass.
Ordering Information
For quotation, please provide:
-
Diameter and thickness
-
Working pressure and temperature
-
Medium type
-
Quantity and delivery destination
Samples and drawings can be provided upon request.
Contact Us
Email: info@hsahglass.com
WhatsApp: 8618632879676
Website: www.hsahglass.com
Contact us for pricing, technical datasheets, OEM cooperation, or bulk supply.
