Description

Catalogue No.	Joint Size	Code App. Bore	Shank L.
11104/1	S13	5	100
11104/2	S19	9	100
11104/3	S29	15	100
11104/4	S35	19	100
11104/5	S41	27	100
11104/6	S51	–	–

The MEDILAB Spherical Ground Joint (Cup) is a precision-crafted interchangeable joint designed to provide secure, leak-free spherical connections in laboratory glassware systems. Its ground spherical surface allows smooth rotation, flexible alignment, and stable coupling with mating ball joints. Essential in distillation, reaction setups, and specialised assemblies, this joint ensures dependable sealing performance in research and industrial environments.

Key Features

• Manufactured from premium Borosilicate Glass 3.3 for superior durability and thermal resistance
• Precision-ground spherical surface for airtight connections and smooth articulation
• Complies with DIN 12264 standard for universal interchangeability
• Excellent chemical resistance suitable for harsh solvents and reagents
• High mechanical strength to withstand repeated use and heating cycles
• Smooth finish minimizes wear during assembly and prevents leakage
• Allows flexible orientation of the apparatus without strain on the glassware
• Compatible with standard laboratory ball-and-socket systems

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Properties: Low coefficient of thermal expansion (approx. 3.3 × 10⁻⁶ / °C), High thermal shock resistance
• Chemical Resistance: Resistant to acids, alkalis, solvents, oils, and most laboratory chemicals
• Mechanical Strength: Strong and stress-resistant body with ground surface integrity
• Standards Compliance: DIN 12264 (Spherical ground joint dimensions & tolerances) Manufactured under ISO-compliant quality systems

 Technical Specifications

• Available Joint Sizes: Full range including common laboratory ball-and-socket sizes (e.g., S18, S29, S35, S42, and others)
• Dimensions: Conforms strictly to DIN 12264 spherical geometry and taper depth requirements
• Accuracy / Tolerance: Precision-ground joint surfaces ensuring a secure fit with minimal clearance
• Calibration: Not applicable (non-volumetric component)
• Packaging: Individually wrapped or bulk-packed Export-grade protective cartons to prevent surface abrasion
• Accessories Included: Optional ball joints, clamps, and compatible connectors available separately

Handling & Precautions

• Handle carefully to avoid impact on the ground’s spherical surface
• Clean with standard laboratory detergents; avoid abrasive pads or harsh mechanical scrubbing
• Fully compatible with autoclaving and dry heat sterilization (up to approx. 180–200°C)
• Avoid direct flame contact on the ground area to maintain a precision finish
• Use appropriate joint clips or supports where required
• Store in padded or compartmented trays to prevent chipping or wear
• Do not force joints together; ensure proper lubrication when needed for vacuum applications

Applications

• Widely used in chemical research labs, universities, pharmaceutical R&D, and industrial QC/QA laboratories
• Ideal for distillation units, reaction vessels, extraction systems, and specialty apparatus requiring flexible articulation
• Common in organic chemistry workflows, sample preparation, and thermal or mechanical reaction assemblies
• Suitable for biotechnology, petrochemical testing, analytical chemistry, and general scientific research
• Ensures reliable alignment and leak-free connections essential for high-precision experiments

 Why Choose MEDILAB

• Over 35 years of expertise in laboratory glassware manufacturing
• Trusted by customers in 40+ countries, with a strong global distribution network
• High-precision, export-quality production meeting international laboratory standards
• OEM / Private Labeling options available for distributors and brand owners
• Consistent reliability through strict quality control and standardized manufacturing processes
• Robust protective packaging ensures safe transit during domestic and international shipments
• Dependable global supply, supporting both small-volume and large-scale procurement needs