Product Description
KF25 (NW25) Half Nipple Fitting – Aluminum
This aluminum half nipple is a versatile ISO-KF (also called Quick Flange or NW25) vacuum component, used to transition between a KF25 flange port and a tube of the same nominal diameter for system building and modification.
Key Specifications:
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Flange Standard: ISO-KF / Quick Flange, Size 25 (KF25, NW25)
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Nominal Bore: 25 mm
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Material: Aluminum (Lightweight, good thermal conductivity)
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Configuration: Half Nipple (One end: KF25 flange with centering ring groove; Other end: tube for welding or clamping)
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Sealing: Uses a standard Viton® O-ring and centering ring on the flange side
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Vacuum Range: Suitable for medium to high vacuum applications
Applications:
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Connecting pumps, gauges, or valves to aluminum vacuum chambers
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Building or modifying vacuum manifolds and lines
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Prototype and research vacuum systems
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Low-outgassing applications where aluminum is preferred



