1200°C High Temp Resistant
High Transmittance
Acid/Alkali Resistant
Complete Specifications
Aoxin Quartz offers a full range of high-quality Quartz Glass Standard Taper Ground Joints (Sockets and Cones) manufactured in conformance with DIN 12 249 standards. These precision-ground joints are essential for creating interchangeable, leak-tight connections in demanding laboratory glassware assemblies. Fabricated from high-purity fused quartz, our ground joints provide exceptional thermal stability, superior chemical resistance, and excellent optical properties, making them ideal for high-temperature reactions, ultra-pure chemical handling, and photochemical applications. Each joint (male cone or female socket) is designed to be fused onto quartz tubing or other quartz apparatus, with a comprehensive range of NS sizes available to suit your specific needs.
- Product Name : Quartz Connectors with Conical 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)
| Female Joint Sizes / Sockets | tube Φ (mm) | length (mm) |
|---|---|---|
| 5/13 | 8 | 120 |
| 7/16 | 10 | 120 |
| 10/19 | 13 | 120 |
| 12/21 | 15 | 120 |
| 14/23 | 17 | 120 |
| 19/26 | 22 | 125 |
| 24/29 | 28 | 135 |
| 29/32 | 33 | 135 |
| 34/35 | 40 | 150 |
| 45/40 | 50 | 150 |
| 60/46 | 65 | 180 |
| Male Joint Sizes / Cones | tube Φ (mm) | length (mm) |
|---|---|---|
| 5/13 | 4 | 120 |
| 7/16 | 6 | 120 |
| 10/19 | 8 | 120 |
| 12/21 | 11 | 120 |
| 14/23 | 13 | 120 |
| 19/26 | 17 | 125 |
| 24/29 | 22 | 135 |
| 29/32 | 26 | 135 |
| 34/35 | 30 | 150 |
| 45/40 | 40 | 150 |
| 60/46 | 56 | 180 |
Features
- DIN 12 249 Standard Compliance: Guarantees interchangeability with other standard taper joints of the same NS size, ensuring compatibility across different glassware components.
- High-Purity Quartz Construction: Provides superior performance compared to borosilicate glass, including higher temperature resistance (up to 1200°C or more), enhanced chemical durability (especially against alkalis and certain acids at high temperatures), and better UV transmission.
- Precision Grinding: Ensures a tight, reliable seal between male and female joints, minimizing leaks in vacuum or pressure applications, and reducing the need for sealing grease in many cases.
- Thermal Shock Resistance: Capable of withstanding significant and rapid temperature changes without cracking, crucial for many laboratory procedures.
- Versatile Connectivity: Allows for the flexible assembly of complex laboratory apparatus for distillation, reaction, synthesis, gas purification, and more.
- Chemical Inertness: Minimizes contamination and ensures the purity of reactants and products.
- Wide Range of Sizes: Available in a comprehensive selection of NS (Normal Schliff) sizes from small (e.g., NS 5/13) to large (e.g., NS 60/46), complete with corresponding tube dimensions for easy integration.
- Ideal for Demanding Applications: The preferred choice for operations involving extreme temperatures, aggressive chemicals, or when high optical purity is required.