Model: K250321008.
Overview
The Pyrex Sight Reflex Glass Sheet is supplied as a sight / viewing glass made from High borosilicate glass. Listed geometry: size Od From 50mm to 500mm. Optical / electrical data: transmittance ≥91%, sheet resistance ≥200 ºC. Temperature 500ºC. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | High borosilicate glass |
|---|---|
| Size | Od From 50mm to 500mm |
| Model NO. | K250321008 |
| Process | Cut, Polish, Ground, Tempered |
| Property 1 | Borosilicate Heat Resistant |
| Shipment | by Sea, by Air, by Courier |
| Item | High Pyrex Pressed Round Sight Glass |
| Coefficient of thermal expansion | 3.3 × 10 /K |
| Max continuous operating temperature | 500ºC |
| Thermal shock resistance | ≥200 ºC |
| Light transmittance | ≥91% |
| Standard thickness | 4mm,5mm,6mm,8mm,10mm,12mm,15mm,20mm |
| Available processing | Cutting, grinding, chamfering, drilling, tempering |
| Applicable medium | Water, oil, steam, weak acid, weak alkali liquid & gas |
| Power industry | Boiler sight window, steam generator liquid level sight glass |
| Chemical & petrochemical | Reaction kettle, storage tank, pipeline viewing window |
| Food & beverage | Fermentation tank, beverage storage vessel sight glass |
| Pharmaceutical industry | Mixing tank, sterile liquid storage equipment |
| Thermal machinery | Industrial oven, drying furnace, heating equipment observation window |
| Hydraulic equipment | Oil tank, cooling water tank liquid level sight window |
| Edge polishing | Smooth anti-cut edge, R round corner & C chamfer |
| Drilling | Single or multiple mounting holes for flange installation |
| Tempering strengthening | Improve pressure resistance and explosion-proof performance |
| Inner packing | Each sight glass wrapped with shockproof PE foam, foam separators between sheets to prevent scratches and collision |
| Outer packing | Export standard plywood case, moisture-proof and shockproof for sea and air transport |
| Sample service | Small test samples available for performance inspection |
| Temperature resistance | Long working temperature ≤ 450 ° C, short time working ≤ 500 ° C |
| Light transmission rate | 95% up |
| Hydraulic Water-resistant strength | More than test 40Kgf/cm ² |
| Thermal stability | T300 ° C |
| Linear expansion coefficient (0-300 ° C) | 3.3 × 10-7 K-1 |
| Softening temperature | 820° C |
| Supplier | Jinan Honhai Glass Company Limited |
What to specify when you request a quote
- Glass type and thickness — listed as “High borosilicate glass”; name the glass and thickness.
- Temperature and pressure — listed as “3.3 × 10 /K”; give working temperature, thermal shock and any pressure rating.
- Strengthening and safety — listed as “Improve pressure resistance and explosion-proof performance”; state tempering, lamination or the safety standard.
- Outline and edges — listed as “Od From 50mm to 500mm”; send a drawing with outline, holes and edge finish.
Engineering guides for this part
For material grades and coating options, see Custom Borosilicate Glass Sheets Cut to Size: Precision and Performance. How parts like this are machined and finished is covered in How Borosilicate Glass Is Sandblasted for Matte Surface Processing. For an application example, read Quartz Glass Windows for High-Temperature Appliance Modules. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is Infrared Windows.
