Borosilicate Disc Sight Glass for Sale – IWAKO Replacement Glass
Looking for borosilicate disc sight glass for sale for an industrial tank, vessel or machine?
IWAKO supplies flat circular Borosilicate glass for replacement and industrial viewing applications. The product described here is the glass disc only — not a flange, housing, gasket or complete sight glass assembly.
Before ordering, buyers should confirm more than just the outside diameter. Thickness, process fluid, temperature and operating conditions can also affect whether the replacement glass matches the existing application.
What Is a Borosilicate Disc Sight Glass?
A Disc Sight Glass is a flat circular glass component used as the transparent viewing element of an existing inspection window.
It may also be called:
- Round Sight Glass
- Circular Sight Glass
- Sight Glass Disc
- Round Viewing Glass
- Replacement Sight Glass
The glass allows operators to visually observe conditions such as liquid presence, colour, clarity, foam, sediment or other visible process changes.
Why Use Borosilicate Glass?
Borosilicate glass is widely used for technical viewing applications because it provides good optical transparency, relatively low thermal expansion and strong chemical durability.
These properties make it suitable for many industrial environments involving temperature variation or contact with process fluids.
However, Borosilicate should not be considered universally resistant to every chemical. Actual chemical compatibility must be checked against the process fluid, concentration and temperature.
Typical Applications
Circular glass discs may be used as replacement viewing glass in equipment such as:
- Storage Tanks
- Process Tanks
- Mixing Tanks
- Chemical Tanks
- Water Tanks
- Oil Tanks
- Lubrication Reservoirs
- Reactor Vessels
- Receiver Vessels
- Pressure Vessels
- Filters and Separators
- Industrial Process Equipment
The equipment type alone does not determine the correct glass specification. Actual operating conditions must also be considered.
What Should You Check Before Buying?
Outside Diameter The outside diameter should match the original glass or equipment drawing.
Thickness Thickness should normally follow the existing specification. Do not assume that a thicker glass is automatically the correct or safer replacement.
Process Fluid Identify whether the glass is exposed to water, oil, chemicals or another process medium. For chemical service, provide the chemical name and concentration when available.
Temperature Inform the supplier if the application involves elevated temperature, rapid temperature changes or repeated heating and cooling.
Pressure or Vacuum For pressure or vacuum service, provide the original specification and operating conditions.
A pressure rating cannot be determined from the word “Borosilicate,” diameter or thickness alone. Pressure-resistant circular sight glass standards apply to specifically manufactured and qualified products, not automatically to every Borosilicate glass disc.
Can I Order Replacement Glass Without a Part Number?
Yes. For many replacement enquiries, you can start by sending:
- Outside Diameter
- Thickness
- Quantity
- Clear photo of the existing glass
If an equipment drawing or original specification is available, send it as well.
This gives the supplier better information for comparing the required replacement glass before quotation.
Frequently Asked Questions
Is Disc Sight Glass the same as Round Sight Glass?
The terms are commonly used to describe a flat circular glass component used as a viewing window in industrial equipment.
Summary
IWAKO Circular Sight Glass is intended for customers who need a Borosilicate glass disc only for replacement or industrial viewing applications.
For a straightforward replacement, start with the original glass dimensions and photo.
For Pressure Vessel, Reactor, Chemical or elevated-temperature service, provide the original specification and operating conditions before selecting the replacement glass.
Request IWAKO Disc Sight Glass Price & Quotation
Need replacement Borosilicate glass?
Send us: Outside Diameter + Thickness + Quantity
For Pressure Vessel, Reactor, Chemical or High-Temperature applications, please also send the available Drawing or original Specification together with Pressure, Temperature and Process Fluid information for product comparison before quotation.
BB STEEL INTERNATIONNAL
Tel. 061 590 6036
Line ID: @bbsinter
E-mail: bbssale1@gmail.com
Website: www.bbsinter.com
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