MDC’s 6-3/4" Outer Diameter (171.45 mm) Conflat® (CF) flange, made from high-grade 304 stainless steel, is engineered for superior performance in ultrahigh vacuum (UHV) environments. Designed to meet the demanding requirements of scientific and industrial vacuum systems, this DN200CF flange is available in both rotatable and nonrotatable styles for installation flexibility.

Key Features

UHV Performance: Leak-tight to 1x10⁻¹³ Torr, ideal for high-vacuum applications
High Temperature Resistance: Rated for continuous use up to 450°C (842°F)
Material: Corrosion-resistant 304 stainless steel
Design Options: Choose from rotatable or nonrotatable configurations
Seal Compatibility: Supports OFE copper and Viton® elastomer gaskets
Standard Interface: Fully Conflat® compatible with other CF hardware
Bolt Hole Variants:
Through hole: 18 holes drilled to 0.332" (8.43 mm)
Tapped hole: 18 holes threaded 0.312-24 UNF

Applications

The 6-3/4" CF flange is ideal for high-performance UHV applications across semiconductor processing, thin-film deposition (PVD/CVD), beamline and synchrotron facilities, surface science, and space simulation systems. Its high leak integrity, robust construction, and thermal durability make it a preferred choice in scientific laboratories, aerospace research, vacuum metallurgy, and advanced material processing equipment.