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ISO Vacuum Viewport
The ISO Vacuum Viewport provides dependable optical access for medium and high-vacuum systems using standard ISO-K or ISO-F flange connections. Available with borosilicate, fused quartz, sapphire, CaF₂, or BaF₂ windows, it offers excellent optical performance and reliable vacuum sealing for industrial and scientific applications.
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Technical data
ISO Vacuum Viewport Overview
The ISO Vacuum Viewport is designed to provide reliable optical access for medium and high-vacuum systems while maintaining excellent vacuum integrity. Manufactured with precision ISO stainless steel flanges, it is available with a range of premium optical window materials, including borosilicate glass, fused quartz, sapphire, calcium fluoride (CaF₂), and barium fluoride (BaF₂).
Engineered for large vacuum chambers and industrial vacuum equipment, the viewport enables clear visual inspection, laser transmission, spectroscopy, and optical diagnostics without compromising vacuum performance. Different window materials can be selected to match UV, visible, near-infrared, or infrared applications, making the viewport suitable for semiconductor manufacturing, vacuum coating, plasma processing, scientific research, and optical instrumentation.
Standard ISO flange sizes are available, and custom designs can be manufactured to meet specific optical, mechanical, and vacuum requirements.
ISO Vacuum Viewport — Technical Data
| Specification | Details |
|---|---|
| Product Name | ISO Vacuum Viewport |
| Flange Type | ISO |
| Body Material | SS304L / SS316L Stainless Steel |
| Window Materials | Borosilicate, Fused Quartz, Sapphire, CaF₂, BaF₂ |
| Standard Sizes | ISO63, ISO80, ISO100, ISO125, ISO150, ISO200 |
| Vacuum Level | Medium Vacuum (MV) / High Vacuum (HV) |
| Leak Rate | ≤1 × 10⁻⁹ mbar·L/s (Helium Tested) |
| Operating Temperature | Depends on window material |
| Sealing Method | O-Ring Seal |
| O-Ring Material | Viton, Silicone, EPDM (Optional) |
| Installation | Vacuum Chambers, Coating Systems, Scientific Equipment |
Optical Window Material Selection
| Window Material | Spectral Range | Key Advantages | Typical Applications |
|---|---|---|---|
| Borosilicate | Visible | Cost-effective and durable | General vacuum observation |
| Fused Quartz | UV – NIR | Excellent UV transmission and thermal stability | UV optics, laser systems |
| Sapphire | UV – IR | High hardness and pressure resistance | High-pressure vacuum and laser applications |
| CaF₂ | UV – IR | Wide spectral transmission and low absorption | UV optics and spectroscopy |
| BaF₂ | UV – Mid IR | Excellent infrared transmission | FTIR and infrared optical systems |
ISO Vacuum Viewport— Drawing
ISO Vacuum Viewport Size Guide
| ISO Flange Size | Nominal Diameter | Typical Application |
|---|---|---|
| ISO63 | 63 mm | Laboratory vacuum systems |
| ISO80 | 80 mm | Small coating equipment |
| ISO100 | 100 mm | Medium vacuum chambers |
| ISO125 | 125 mm | Industrial small vacuum systems |
| ISO150 | 150 mm | Semiconductor and coating equipment |
| ISO200 | 200 mm | Large vacuum systems |
KEY FEATURES
Multiple Optical Materials
Available with borosilicate, fused quartz, sapphire, CaF₂, and BaF₂ windows.
Reliable Vacuum Sealing
Precision-machined flange ensures stable vacuum performance.
Excellent Optical Clarity
High-quality optical windows provide clear process observation.
Wide Spectral Coverage
Material options support UV, visible, near-infrared, and infrared applications.
Corrosion-Resistant Construction
Stainless steel housing ensures durability in demanding environments.
Custom Materials Available
Optional quartz, sapphire, ZnSe, CaF₂, or fused silica windows.
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:An ISO vacuum viewport is an optical viewing window designed for ISO flange systems, providing visual or optical access while maintaining reliable vacuum sealing in medium and high-vacuum equipment.
A:Standard sizes include ISO63, ISO80, ISO100, ISO125, ISO150, ISO200, . Custom sizes are available upon request.
A:Yes. Anti-reflective (AR), UV-enhanced, infrared, and other custom optical coatings are available depending on the selected window material and wavelength requirements.
A:Yes. We manufacture custom ISO vacuum viewports based on customer drawings and specifications, including special flange sizes, window materials, optical coatings, thicknesses, and vacuum performance requirements.
A: including borosilicate glass, fused quartz, sapphire, calcium fluoride (CaF₂), and barium fluoride (BaF₂).
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