Description
Retort ring without boss head, closed, Ø 140 mm is a stainless-steel laboratory ring designed to support round-bottom flasks and similar vessels on a retort stand. The closed circular form provides a continuous seating surface with a diameter of 140 mm, while the 220 mm stem length enables convenient positioning when fixed with a separate boss head or clamp. Supplied as one piece with a net weight of 0,384 kg, it serves chemistry, biology and teaching laboratories that need stable glassware support for heating, distillation or reaction work. Without an integrated boss head, the ring can be combined freely with standard stand hardware, offering flexibility for multi-level apparatus assemblies. Robust stainless-steel construction from manufacturer Witeg delivers durable, corrosion-resistant performance under typical laboratory conditions and repeated handling. This closed retort ring is well suited to general laboratory support tasks that require a larger defined ring diameter together with a solid metal stem for secure mounting on conventional retort stands.
This article is part of Clamps & bossheads, in Stands, clamps & racks.
Key features
- Pack size: 1 pc
- Material: Stainless steel
- Diameter: Ø 140 mm
- Stem length: 220 mm
- Design: Closed ring without boss head
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Questions about Tripod ring without sleeve close Ø 140mm
What is this article?
Tripod ring without sleeve close Ø 140mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Clamps & bossheads, inside Stands, clamps & racks, in Labware.
A bosshead grips the rod. A clamp grips the flask or the condenser, usually through two jaws with cork or vinyl faces. Three-finger and two-finger clamps hold different shapes. The jaw opening is the specification.
A stand, a clamp and a rack hold something still so the hands can do the work. A bosshead locks a clamp to a rod. A test-tube rack keeps tubes upright and in an order the operator can read back. The failure is almost always mechanical: the clamp slips, or the rack does not match the tube diameter. The glass they support is indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stands, clamps & racks. The sub-category is Clamps & bossheads. The catalogue is Labware.
Shelves beside this one are Test tube racks, Stands, rods & bases and Stand & rack accessories.
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.

