METAGLAS® Type 19.CF — ConFlat UHV Sight Glass Assembly
The METAGLAS® Type 19.CF sight glass is engineered for the most demanding ultra-high vacuum (UHV)
environments. Designed to the ConFlat standard (ISO 3699), this assembly combines the unmatched safety of
fused-metal technology with a compact, high-integrity sealing interface ideal for scientific, semiconductor, and
high-vacuum industrial systems.
Key Features
ConFlat – ISO 3699 Design: Fully compatible with standard CF flanges for UHV sealing
Ultra-High Vacuum Performance: Engineered for applications requiring extremely low outgassing
Compact Construction: Minimal build height with maximum optical clarity
High Vacuum & Pressure Capability: Reliable in both deep vacuum and overpressure conditions
Long Service Life: Prestressed glass-metal fusion delivers exceptional durability
Performance Advantages
Zero Risk of Catastrophic Failure: Mechanical prestress prevents sudden rupture
Low Outgassing: Ideal for clean, high-purity, or contamination-sensitive environments
Thermal Stability: Designed to withstand typical CF bake-out temperatures
Chemical Resistance: High-grade borosilicate fused with stainless steel for maximum compatibility
Typical Applications
Ultra-high vacuum chambers
Surface science and analytical instrumentation
Synchrotron and accelerator systems
Semiconductor and thin-film production
Cryogenic or high-temperature vacuum environments
Plasma and ion beam processes
Why METAGLAS® for CF Applications?
Superior optical performance for diagnostics and visual inspection
Industry-leading safety and reliability for UHV systems
Outperforms conventional windows in stability, strength, and lifetime
Proven compatibility with ISO 3699 CF flange standards
The METAGLAS® Type 19.CF is the optimal choice where uncompromising vacuum integrity, safety, and service life
are mandatory.
Our technical team can support you with sizing, sealing options, and integration into existing UHV architectures.
