Precision Glass Tubing and Rubber Stoppers for Industrial and Laboratory Applications
In the intricate world of chemical processing, pharmaceutical manufacturing, and scientific research, the integrity of every component is paramount. The connection between glassware and the external environment is a critical juncture, often managed by a fundamental yet vital assembly: the **glass tubing and rubber stopper**. This product page details our high-quality, precision-engineered glass tubing and rubber stopper assemblies, designed to offer reliable sealing, chemical resistance, and durability for demanding B2B applications worldwide.
Product Overview
Our **glass tubing and rubber stopper** sets are engineered to create secure, leak-proof seals in a variety of laboratory glassware and industrial equipment. The assembly consists of borosilicate glass tubing, known for its low thermal expansion and high chemical inertness, paired with specially formulated rubber stoppers that ensure an airtight and pressure-resistant closure. This combination is essential for tasks ranging from simple fluid transfer to complex vacuum or pressure systems. We offer a comprehensive range of standard sizes and can provide custom diameters, lengths, and rubber compounds (such as silicone or EPDM) to meet specific OEM or project requirements, ensuring perfect compatibility with your existing apparatus.
Key Features
- Premium Borosilicate Glass: Manufactured from 3.3 borosilicate glass, our tubing offers exceptional resistance to thermal shock, chemical corrosion, and mechanical stress, ensuring long-term reliability.
- High-Performance Rubber Compounds: Stoppers are available in various materials including silicone (for high-temperature/acid resistance), EPDM (for solvent resistance), and natural rubber (for general use), each providing an optimal balance of flexibility and sealing force.
- Precision Ground Joints: Glass tubing ends can be fire-polished for safety or precision-ground to specific tapers (e.g., ST/NS joints) for standardized, secure connections.
- Custom Configuration Ready: We specialize in tailoring the **glass tubing and rubber stopper** dimensions, thickness, and rubber durometer to fit unique vessel necks, reactor ports, or sampling systems.
- Consistent Quality & Batch Traceability: Every production batch undergoes rigorous inspection for dimensional accuracy and material integrity, with full traceability to ensure consistent performance.
Technical Specifications
| Component | Parameter | Specification / Options |
|---|---|---|
| Glass Tubing | Material | Borosilicate Glass 3.3 (ISO 3585) |
| Standard Outer Diameter (OD) | 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm (Custom available) | |
| Wall Thickness | 1.0mm, 1.5mm, 2.0mm (Standard) | |
| End Finish | Fire-Polished, Cut & Flame-Sealed, Ground Taper Joint (e.g., 14/23, 19/26) | |
| Rubber Stopper | Material | Silicone, EPDM, Natural Rubber, Butyl Rubber |
| Hardness (Shore A) | 40 ±5, 50 ±5, 60 ±5 (Select based on application) | |
| Standard Hole Diameter | Pre-punched to match glass tubing OD (tolerance ±0.2mm) | |
| Temperature Range | Silicone: -50°C to +230°C; EPDM: -40°C to +150°C (varies by compound) | |
| Packaging | Poly bags in carton boxes; bulk OEM packaging available. | |
Application Scenarios
The versatility of a well-matched **glass tubing and rubber stopper** makes it indispensable across numerous sectors:
- Chemical & Pharmaceutical Manufacturing: Sealing ports on reaction vessels, fermenters, and distillation columns for safe vapor and liquid handling.
- Research & Development Labs: Constructing custom apparatus for experiments, gas collection systems, condensers, and filtration setups.
- Educational Institutions: For teaching laboratories in chemistry and biology, providing safe and reusable connections for student experiments.
- Environmental Monitoring: Creating sealed sampling lines for air or water quality analysis equipment.
- Food & Beverage Industry: Used in pilot plants and quality control labs for sample transfer and testing.
Advantages
Choosing our **glass tubing and rubber stopper** assemblies delivers tangible benefits to your operations:
- Enhanced System Integrity: The precise fit minimizes the risk of leaks, contamination, or pressure loss, protecting both your process and personnel.
- Superior Chemical Compatibility: The inert nature of borosilicate glass and our selected rubber compounds ensures compatibility with a vast array of aggressive chemicals.
- Durability & Reusability: High-quality materials resist aging, cracking, and deformation, offering excellent cost-per-use value compared to inferior alternatives.
- Process Safety: Reliable sealing is crucial for maintaining controlled atmospheres, vacuum levels, and containing hazardous materials.
- Operational Flexibility: The ability to customize allows for rapid prototyping and adaptation of equipment without the need for entirely new glassware.
Why Choose Us
As a specialized manufacturer and global supplier, we are committed to being your trusted partner for precision glass and rubber components.
- Deep Technical Expertise: Our engineers understand the application challenges and can recommend the optimal **glass tubing and rubber stopper** configuration for your needs.
- Integrated Manufacturing: We control the production of both glass and rubber components in-house, guaranteeing perfect fit, quality consistency, and competitive pricing.
- Rigorous Quality Assurance: From raw material inspection to final dimensional checks, our multi-stage QA process ensures every product meets stringent industrial standards.
- Global Logistics Network: We are experienced in handling international B2B orders, ensuring reliable, on-time delivery to your facility, supported by clear documentation.
- Dedicated Customer Support: Our team provides responsive pre-sales consultation and after-sales support to ensure your complete satisfaction.
FAQ
Q: Can you provide a stopper material recommendation for my specific chemical application?
A: Absolutely. Please provide the chemical names, concentrations, and temperature conditions. Our technical team will advise on the most suitable rubber compound (e.g., silicone for acids/bases, EPDM for solvents) to ensure compatibility and longevity.
Q: Do you offer custom lengths and diameters for the glass tubing?
A: Yes, custom sizing is a core part of our service. We can produce **glass tubing and rubber stopper** sets to your exact specifications, including non-standard ODs, wall thicknesses, and precise cutting lengths.
Q: What is the lead time for standard vs. custom orders?
A: Standard size assemblies are typically available for shipment within 5-7 business days. Custom orders require a short production time, usually 10-15 business days, depending on complexity and quantity.
Q: How do I ensure I order the correct size stopper for my glass tubing?
A: The critical measurement is the Outer Diameter (OD) of the glass tubing. The stopper hole should have a slightly smaller diameter (interference fit) to create a tight seal. Our product listings specify compatible sizes, and our team can assist with confirmation.
Q: Are your products suitable for autoclave sterilization?
A: Our silicone rubber stoppers paired with borosilicate glass tubing are fully autoclavable (typically up to 121°C, 15 psi). Please confirm the autoclave cycle parameters with us for specific material confirmation.
