METAGLAS® Type 79.ISO-K — Ultra-High Vacuum Sight Glass Assembly

The METAGLAS® Type 79.ISO-K sight glass is engineered for ultra-high vacuum (UHV) environments, delivering the highest levels of mechanical integrity, optical clarity, and contamination-free performance. Manufactured with glass fused into a stainless-steel ring under permanent compressive stress, this design provides unmatched safety and durability compared to conventional vacuum viewports.

Standards & Compatibility

• Connection Standard: ISO-K to DIN 28404 and ISO 1609
• Fully UHV-Compatible: Suitable for ultra-high vacuum applications requiring low outgassing
• Material Grade: Typically stainless steel for superior cleanliness and thermal stability
• Mounting: Fits ISO-K clamp systems for rapid installation and removal

Key Performance Advantages

• Extreme Vacuum Integrity: Zero risk of implosion thanks to fused-metal compression design
• Minimal Outgassing: Ideal for high-purity processes and vacuum-sensitive systems
• Optical Quality: High-purity borosilicate ensures distortion-free viewing
• Thermal and Mechanical Stability: Maintains seal integrity under temperature cycling and vibration
• Long Service Life: Resistant to stress, fatigue, and chemical attack

Typical Applications

• Ultra-high vacuum chambers
• Research and laboratory vacuum systems
• Semiconductor manufacturing
• Plasma processes
• Analytical instrumentation
• Sterile or contamination-controlled environments

Specify METAGLAS® Type 79.ISO-K when your vacuum system demands uncompromising clarity, reliability, and contamination-free performance.
Our engineering team can advise on sizing, sealing materials, and integration into your vacuum architecture.

Technical Specifications: