Description
The Unprinted Ground Glass Cone Joints from Osmosis Scientific are the professional choice for laboratory glass blowers and researchers constructing custom apparatus. These male “cone” joints are crafted from premium Boro 3.3 borosilicate glass, ensuring that every component delivers the chemical durability and thermal stability required for high-performance laboratory applications.
By providing these joints in an “unprinted” format, we ensure a clean, professional finish for your custom-built glassware without the interference of branding or ink on the connection points. Each joint is precision-ground to a standard 1:10 taper, ensuring a seamless and vacuum-tight fit when paired with any ASTM-compliant socket joint. This universal compatibility is essential for the assembly of distillation setups, reaction vessels, and manifold systems.
The heavy-wall construction of these joints provides increased mechanical strength, allowing them to withstand the stresses of repeated assembly and high-vacuum conditions. Their superior thermal properties make them ideal for permanent welding to borosilicate tubing and flasks, maintaining structural integrity even under intense heat.
Specifically designed for use in research facilities, chemical manufacturing, and specialized glass-blowing workshops, the Osmosis Scientific Cone Joints provide the reliability and precision necessary for secure fluid and gas transfer.
| Socket Size | Approx. O.D. of Tube (mm) | Total Length (mm) | Pack of | SKU | Enquiry |
|---|---|---|---|---|---|
| 10/30 | 8 | 120±10 | 10 | JCA-10_30 | Enquire Now |
| 12/30 | 10 | 120±10 | 10 | JCA-12_30 | Enquire Now |
| 14/35 | 13 | 120±10 | 10 | JCA-14_35 | Enquire Now |
| 19/38 | 16 | 120±10 | 10 | JCA-19_38 | Enquire Now |
| 24/40 | 22 | 150±15 | 10 | JCA-24_40 | Enquire Now |
| 29/42 | 26 | 150±15 | 10 | JCA-29_42 | Enquire Now |
| 34/35 | 30 | 150±15 | 10 | JCA-34_35 | Enquire Now |
| 45/40 | 40 | 150±15 | 10 | JCA-45_40 | Enquire Now |
Frequently Asked Questions (FAQs)
Unprinted ground glass joints eliminate the risk of sample contamination or outgassing from ceramic inks, providing the “pure-surface” environment required for sensitive pharmaceutical and analytical research.
Borosilicate 3.3 glass provides a low coefficient of thermal expansion, offering superior resistance to thermal shock and chemical corrosion during rapid heating or cooling cycles in the laboratory.
Joints typically “freeze” due to chemical bonding or the cooling of a sealed system. Osmosis Scientific recommends using high-quality silicone grease for vacuum work or PTFE sleeves for grease-free applications. If a joint does become stuck, gently tapping the outer joint with a wooden tool or using a controlled heat gun to expand the female socket is the safest recovery method.
Reviews
There are no reviews yet.