Bored KF (QF) HV Flanges
KF (QF) HV Bored Stainless Steel Flanges (Inch Tube)
Bored KF flanges for inch tubing feature a sexless design without male or female sides. They utilize an elastomeric o-ring in a centering ring for a reliable vacuum seal.
KF (QF) HV Bored Stainless Steel Flanges (Metric Tube)
Bored KF flanges for metric tubing feature a sexless design, eliminating male or female sides. They utilize an elastomeric o-ring in a centering ring to ensure a secure vacuum seal.
Bored KF (QF) HV Flanges for Flexible Vacuum Line Connections
ThinFilmMaterials offers high-quality Bored KF (QF) HV Flanges designed to connect tubing or components directly into high vacuum (HV) systems. These bored flanges are precision-machined with a center bore sized to match standard tube outer diameters, making them ideal for welding, brazing, or mechanical clamping applications.
Our Bored KF (QF) HV Flanges follow the industry-standard KF/QF (Quick Flange) interface and are compatible with elastomer O-rings, centering rings, and clamp-style couplings. Made from 304L or 316L stainless steel, these flanges ensure high cleanliness, corrosion resistance, and vacuum sealing performance.
Key Features:
Flange type: KF/QF (NW) per ISO 2861 standard
Center bore: Precision-sized to accept tubing OD for welding or insertion
Materials: 304L or 316L stainless steel
Vacuum rating: High vacuum (≤ 10⁻⁷ Torr)
Sizes: NW16, NW25, NW40, NW50 (custom bores available)
Applications:
Bored KF (QF) HV Flanges are widely used in:
Roughing and foreline vacuum connections
Pumping lines and trap assemblies
Custom transitions from tubing to KF/QF interface
Thin film deposition and process gas routing
Laboratory and R&D vacuum systems
All Bored KF (QF) HV Flanges offered by ThinFilmMaterials are manufactured to tight tolerances for reliable fit and vacuum integrity. Custom bore sizes, surface finishes, and welding preparation services are available upon request.