Description
Blank-off flange, fixed, stainless steel, DN 40 CF is a terminating flange for ConFlat vacuum connections on laboratory apparatus. It provides a fixed stainless-steel blank-off for DN 40 CF ports that must be closed during installation, modification, or routine service. The unit is supplied as 1 pc and functions as an accessory or spare part for systems built around the CF flange standard at DN 40. Fixed blank-off flanges in stainless steel are commonly used to seal unused chamber ports, manifold branches, and instrument interfaces while maintaining material compatibility with surrounding CF hardware. This DN 40 CF blank-off flange comes from manufacturer WELCH and is intended for laboratories that need a defined ConFlat termination rather than an improvised cover. The DN 40 designation sets the nominal size, and the CF marking identifies the flange geometry so the part can be matched to suitable copper gaskets, fasteners, and mating flanges. Listed among accessories and spare parts for laboratory equipment, it supports clear port management on vacuum lines and vessels. Choose this fixed stainless-steel blank-off flange when a DN 40 CF closure is specified and a single-piece laboratory spare is required.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Blank-off flange, fixed
- Nominal size: DN 40 CF
- Flange standard: CF
- Material: Stainless steel
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Questions about Blank-Off Flange, Fixed, Stainless Steel, DN 40 CF
What is this article?
Blank-Off Flange, Fixed, Stainless Steel, DN 40 CF is the article on this page. Luminix Health distributes WELCH for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing accessories.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.