MDC’s Flexible Coupling Fittings are engineered to solve common alignment challenges in high vacuum systems, offering both performance and convenience. As part of the Kwik-Flange™ ISO KF and Large-Flange™ ISO LF family, these fittings are ideal for short misalignment connections where rigid tubing would fail to seal properly. Built with 321 stainless steel bellows, they provide the necessary flexibility while maintaining vacuum integrity and mechanical durability.

These couplings are high vacuum rated to 1x10⁻⁸ Torr (1.3x10⁻⁶ Pa) and operate at temperatures up to 200°C. Available in sizes from NW16 to NW250, they feature thin wall or thick wall configurations depending on system needs. Their symmetric, nonrotatable geometry ensures accurate installation and sealing. A standard matte finish supports clean assembly in sensitive environments, and the fully ISO-compatible design guarantees seamless integration with existing KF and LF vacuum systems.

Industry Applications

MDC’s Flexible Coupling Fittings are critical in systems where thermal expansion, vibration, or mechanical offsets may cause misalignment in vacuum lines. Commonly used in semiconductor process equipment, vacuum chambers, UHV systems, and materials analysis instruments, these bellows-style couplings provide a flexible, leak-tight solution for connecting uneven or shifting components. Their ability to compensate for axial, angular, and lateral movement makes them indispensable in plasma processing, thin-film deposition, and high-precision research labs, where system uptime and seal integrity are paramount.