A4931-4-QF

Magnesium Fluoride (MgF2) Viewport, UHV Rated Vacuum-Optics, 0.90″ View Dia, 2.95″ QF / KF Flange

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Business Resources

2025 MPF Brochure

Export Compliance

ISO Certification

ITAR Registration

MPF Products Inc. Material Sourcing Declaration

Product Capabilities

Terms and Conditions

Warranty – Compatibility Mode

Technical Resources

Barrel Contact

BNC Coax Cable Build Instructions

Choosing the Right Vacuum Feedthroughs, Flanges & Hermetic Components

Coaxial Rating

Frequency vs Wavelength Charts

Fused Silica Laser-Induced-Damage

Laser Damage Considerations

Leak Detection Science

MS Style Connector Assembly Instructions

Pressure Testing

Product Sheet Connectivity

Sealing Technology Breakdown

SHI-1 Helium Mass Spectrometer Leak Detection

Temperature Information

The Science of Hermetic Sealing: Protecting Critical Systems Across Harsh Environments

Thermocouple Reference Chart

Viewport Transmission Chart

What Is Ultra-High Vacuum (UHV)?

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