Description
Spherical joint ball KS 35/20 is a grease-free, flexible spherical joint component for laboratory glassware assemblies. It belongs to the System Rotulex range and is manufactured from borosilicate glass 3.3. The KS 35/20 joint size defines the spherical interface, allowing the ball to pair with a matching socket to form a flexible, lubricant-free connection. This configuration is intended for apparatus where conventional greased ground joints are not preferred and clean coupling is required. Supplied as one piece with a net weight of 0,055 kg, the component is classified as a joint connection product. The spherical joint ball from manufacturer Rettberg carries the registered trademark Rettberg ® and originates from Germany. Borosilicate glass 3.3 provides the dimensional stability and chemical durability expected of standard laboratory glass parts. Within the Rotulex system the ball supports modular assembly of glass apparatus, enabling flexible alignment when used with the corresponding socket, sealing elements and clamps. It is suited to research and industrial laboratories that rely on spherical joint technology for grease-free, flexible glassware linkages in synthesis, distillation and general experimental setups.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: KS 35/20
- Material: Borosilicate glass 3.3
- System: Rotulex
- Connection: Grease-free, flexible
- Technical Information Sheet:
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Questions about Spherical joint ball size 35/20, for grease-free, flexible connection,
What is this article?
Spherical joint ball size 35/20, for grease-free, flexible connection, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Verrerie à rodage (autre), inside Verrerie de distillation & d'extraction, in Matériel de laboratoire.
This is ground-joint glassware that is not a head, a condenser or a Soxhlet: receivers, blank joints, odd adapters. A ground joint is named by the wide end and the length, such as 29/32. Mismatched joints do not seal, even with grease.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Verrerie de distillation & d'extraction. The sub-category is Verrerie à rodage (autre). The catalogue is Matériel de laboratoire.
Shelves beside this one are Têtes de distillation, adaptateurs & colonnes, Condenseurs and Appareils Soxhlet & d'extraction.
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.