Custom Mounting and Welding for Viewports and Feedthroughs
MPF Products designs and manufactures precision UHV viewports and feedthroughs. We also mount those components to the hardware your vacuum system requires, from standard flanges to custom mounts and plates.
Because the same team designs the component and performs the weld, your assembly arrives hermetically sealed, leak tested, and ready to install.
Why Proper Installation Matters
A viewport or feedthrough is only as reliable as the joint that connects it to the chamber. When customers mount components themselves, the problems we hear about most often are:
- Failure to achieve a hermetic seal. A weld or flange joint that leaks can keep a system from reaching its target base pressure.
- Damaged components. Uncontrolled welding heat can stress or crack the brazed ceramic-to-metal and window seals inside the component, or distort adjacent piping and flanges.
- Electrical faults. Feedthrough conductors must stay fully isolated from the grounded chamber. A damaged insulator or improper installation can cause shorts, arcing, or a shock hazard.
- Lost time and cost. Rework, replacement parts, and system downtime take time away from the research or production work the system was built for.
Design, Manufacture, and Integration Under One Roof
MPF Products is one of a small number of manufacturers specializing in precision ceramic-to-metal components for vacuum systems. Our engineers bring decades of experience to both the component and its installation, so a single team is responsible for the finished assembly.
- Engineering. We design the component and its mounting interface together, matched to your chamber and application.
- Welding. We weld viewports and feedthroughs to standard and specialty hardware, including custom flanges, mounts, and plates.
- Verification. Completed assemblies are helium leak tested to MPF Products’ standard of less than 1 x 10⁻⁹ atm cc/sec before shipment.
The result is a leak-tight assembly backed by the company that built it, and more time for your team to focus on its research or production work.
Flange Types and Materials
MPF Products mounts components to a wide range of flange standards, including:
| Flange type | Sealing method | Typical use |
|---|---|---|
| CF (knife-edge) | Copper gasket | UHV systems and bakeable assemblies |
| KF / QF (quick flange) | Elastomer O-ring with centering ring, clamped | High vacuum and quick-release connections |
| ISO-K / ISO-F | Elastomer O-ring; claw clamps (ISO-K) or bolted (ISO-F) | Larger-diameter high vacuum ports |
| ASA / ANSI | Gasket or O-ring, bolted | Large-diameter and industrial vacuum systems |
Flanges are available in stainless steel (304 and 316LN) and titanium. For magnetically sensitive applications, 316LN and titanium offer low magnetic permeability.
Discuss Your Assembly
Whether you need a single component welded to a standard flange or a fully custom mounting solution, our engineering team can help. Request a quote or contact us to discuss your application.