
1200°C High Temp Resistant

High Transmittance

Acid/Alkali Resistant

Complete Specifications
Aoxin Quartz offers a range of high-quality Quartz Glass Ball and Socket Joints (Spherical Ground Joints), providing flexible and reliable connections for demanding laboratory glassware assemblies. These joints, available in standard ‘S’ sizes (e.g., S13, S19, S29), consist of a precisely ground male ball component and a corresponding female socket component. Fabricated from high-purity fused quartz, they offer superior thermal stability, excellent chemical resistance, and are designed to be fused onto quartz tubing or apparatus. Ball and socket joints allow for greater flexibility and alignment tolerance compared to standard taper joints, making them ideal for complex setups or systems under vacuum.
- Product Name : Quartz Glass Ball and Socket Joints / Spherical Ground Joints
- Material : 99.99 % Purity Quartz
- Work Temperature :~1200℃
- Soften point : ~1730℃
- Hardness : 5.5 – 6.5 Mohs’ Scale 570 KHN 100
- Tensile Strength : 4.8×107 Pa (N/mm2) (7000 psi)
- Compression Strength : >1.1×109 Pa (160,000 psi)

Socket | tube Φ (mm) | length (mm) |
---|---|---|
S13 | 8 | 100 |
S19 | 13 | 100 |
S29 | 19 | 120 |
Ball | tube Φ (mm) | length (mm) |
---|---|---|
S13 | 8 | 100 |
S19 | 13 | 100 |
S29 | 19 | 120 |
Features
- Flexible Connections: Allow for a degree of angular movement and misalignment between connected glassware, reducing stress on the apparatus.
- High-Purity Quartz Material: Ensures exceptional performance at high temperatures, resistance to most chemicals, and minimal contamination for sensitive applications.
- Reliable Sealing: When properly clamped (and optionally greased for high vacuum), these joints provide a vacuum-tight seal.
- Standardized Sizes: Manufactured in common ‘S’ sizes (e.g., S13, S19, S29) for interchangeability and compatibility with existing setups or other standard components.
- Precision Grinding: Smoothly ground spherical surfaces ensure intimate contact and effective sealing between the ball and socket.
- Thermal Shock Resistance: Quartz construction allows the joints to withstand rapid temperature changes without cracking.
- Versatile Applications: Ideal for connecting reaction flasks, condensers, vacuum lines, rotary evaporators, and other laboratory equipment where flexibility is advantageous.
- Durable Construction: Designed for repeated use in demanding laboratory environments.