Description
Replacement sealing discs for screw caps are PTFE-coated consumable seals intended for laboratory containers, bottles and related closures. These discs restore a reliable sealing interface on screw caps used with vessels and canisters in routine lab workflows, supporting chemical resistance at the contact surface thanks to the PTFE coating. Supplied as a pack of 5 pc(s), they suit maintenance and replacement of worn or contaminated seals without changing the entire cap assembly. The set weighs 0,005 kg and fits naturally into laboratory glassware and consumables setups where hose connectors, seals and bottle accessories are handled daily. Manufactured by DWK Life Sciences, the discs align with standard labware practices for containers and closures. Use them wherever PTFE-faced sealing discs are specified for screw-cap systems in analytical, preparative or general laboratory environments. Clear identification as replacement parts helps keep bottle and vessel fleets serviceable and consistent across the bench.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Product type: Replacement sealing discs
- Coating: PTFE coated
- Weight: 0,005 kg
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Questions about Replacement sealing discs for screw caps, PTFE coated, 5 unit(s)
What is this article?
Replacement sealing discs for screw caps, PTFE coated, 5 unit(s) is the article on this page. Luminix Health distributes DWK Life Sciences 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.