Description
DURAN® spherical joint ball, imperial size S 51/30 is a glass component for producing flexible connections of up to 15° depending on the joint size in laboratory setups. Made from borosilicate glass 3.3, it follows DIN 12244 and DIN 12264. Angles exceeding 5° can be expected to reduce tightness. The nominal size combines the nominal diameter of the spherical joint and, where relevant, the clear width of the tube diameter. Joint connections are to be used with joint grease or PTFE sleeves as a rule. Spherical joint clamps with locking screw form the ideal complement for securing the connection. Offering better releasability through higher flexibility of the joint, this non-self-supporting glass article is intended for further processing. It is suitable for vacuum applications and for installation in glass apparatus and devices. Available as 1 pc with a net weight of 0,119 kg, the item comes from manufacturer Duran/DWK Life Sciences for use in scientific glassware assemblies.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Nominal size: S 51/30
- Standards: DIN 12244 and DIN 12264
- EAN: 4032051051874
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Distillation & extraction glassware
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Ground-joint glassware (other)
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Questions about DURAN® Spherical Joint, ball inches size
What is this article?
DURAN® Spherical Joint, ball inches size is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Ground-joint glassware (other), inside Distillation & extraction glassware, 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 Distillation & extraction glassware. The sub-category is Ground-joint glassware (other). The catalogue is Matériel de laboratoire.
Shelves beside this one are Distillation heads, adapters & columns, Condensers and Soxhlet & extraction apparatus.
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.

