Description
Gasket silicone/PTFE provides a composite sealing element for GL 18 laboratory screw closures. With a diameter of 16,8 mm, the gasket is dimensioned for GL 18 caps and vessels that need a dependable seal between the cap and the bottle neck. The silicone/PTFE build places a PTFE surface toward the media while the silicone component aids compression and recovery under the cap. Packs contain 25 pc(s), which suits stock-keeping for multi-user labs and scheduled replacement of seals on GL 18 equipment. The product forms part of the seals, hose connectors and accessories range for containers, bottles, tins and canisters and is offered from manufacturer Bohlender. Unit pack weight is 0,076 kg. Use these gaskets when maintaining or outfitting GL 18 threaded systems that specify silicone/PTFE inserts, ensuring consistent sealing geometry at 16,8 mm for routine chemical handling, sampling, and storage applications in the laboratory.
This article is part of Bottle accessories (pouring rings, dispensers, caps), in Bottles & containers.
Key features
- Pack size: 25 pc(s)
- Material: Silicone/PTFE
- Thread size: GL 18
- Diameter: 16,8 mm
- Weight: 0,076 kg
- Product type: Gasket
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Questions about Gasket silicone/PTFE, GL 18, Ø 16.8 mm, 25 unit(s)
What is this article?
Gasket silicone/PTFE, GL 18, Ø 16.8 mm, 25 unit(s) is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Bottle accessories (pouring rings, dispensers, caps), inside Bottles & containers, in Labware.
Bottle accessories are the pieces on the neck: a pouring ring, a dispenser seat, a cap liner, a tamper ring. They decide how the bottle delivers and whether the closure still matches after the original cap is gone.
A laboratory bottle is a closed container with a stated volume and a neck that takes a cap, a stopper or a dispenser. Borosilicate glass is the choice when the liquid is a solvent, or when the bottle will be heated or autoclaved. Polyethylene and polypropylene are the choice when the bottle must not shatter, or when hydrofluoric acid would attack glass. A narrow mouth pours. A wide mouth is for powders and for reaching the bottom. Laboratory ware of this kind is indexed under ISO laboratory glassware. Traceable volume sits with the BIPM and NIST Physical Measurement.
Which category should I open next?
The category is Bottles & containers. The sub-category is Bottle accessories (pouring rings, dispensers, caps). The catalogue is Labware.
Shelves beside this one are Laboratory glass bottles, Plastic bottles (narrow & wide mouth), Sample containers & jars, Canisters & jerrycans and Wash bottles.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.

