The MDC Kwik-Flange™ ISO KF NW 40 is a cost-effective, reusable stainless steel vacuum fitting designed for high vacuum system integration. Built for performance, it features a maximum outer diameter of 2.16" (54.86 mm) and inner diameter of 1.375" (34.93 mm), making it ideal for applications requiring secure, leak-tight, and modular vacuum connections.

Rated for vacuum pressures down to 1x10⁻⁸ Torr (1.33x10⁻⁶ Pa) and bakeable to 150°C, this flange meets ISO specifications and is compatible with most third-party ISO KF components. It is especially suited for systems that demand frequent assembly/disassembly, such as research setups and processing tools.

For legacy compatibility, NW 40 can be paired with NW 32 flanges using MDC’s specially designed reducer centering ring, which allows proper alignment using two different rim sizes to accommodate both centering ring locater diameters. The Kwik-Flange™ system includes a full range of standard vacuum fittings and hardware for complete vacuum architecture solutions.

Industry Applications

The Kwik-Flange™ ISO KF NW 40 is ideal for use in semiconductor manufacturing, R&D labs, vacuum process equipment, analytical instrumentation, and coating systems. Its quick-connect functionality, ISO conformity, and robust sealing make it a perfect choice for vacuum environments requiring regular access, flexible system configurations, and reliable UHV performance. Common use cases include plasma processing systems, mass spectrometry, beamlines, and vacuum test stands, where consistent vacuum integrity and ease of use are critical.