Description
PTFE cap for 8 390 103 is a polytetrafluoroethylene closure for the Swiegot-type vacuum filtration apparatus with a 1000 ml funnel capacity. Intended for apparatus number 8 390 103, the cap provides a chemically resistant polymer cover suited to larger-volume laboratory vacuum filtration. PTFE is widely valued for its inert contact surface, making this accessory appropriate when aggressive solvents or demanding sample matrices are processed and a reliable seal over the funnel assembly is required. The unit has a net weight of 0,288 kg and a gross weight of 0,288 kg and is supplied as a single piece for straightforward replacement of worn or missing closures. Available from manufacturer Witeg, it is matched to the 1000 ml funnel configuration used on the corresponding Swiegot vacuum filtration device. Typical uses include preparative filtration, bulk sample clarification, and analytical workflows that depend on a one-litre funnel setup. Research, quality-control, and process laboratories can keep this PTFE cap on hand to maintain continuous operation of their vacuum filtration systems. Pack size is one piece, supporting clear stock control for facilities that standardise on apparatus 8 390 103.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: PTFE
- Compatible apparatus: Swiegot vacuum filtration device No. 8 390 103
- Funnel capacity: 1000 ml
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Questions about PTFE cap for 8 390 103
What is this article?
PTFE cap for 8 390 103 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.