Socket (double Type)

Socket (Double Type) Adapters, also widely recognized as double socket joiners, female-to-female adapters, or ground glass sleeve couplings, are essential laboratory glassware links designed to connect two separate components that feature male ground glass cones. Fabricated from premium-grade borosilicate glass, these adapters feature a streamlined, straight-tube profile with a precision-ground female socket joint at both ends.

The double-female configuration allows laboratory technicians to couple identical or differing cone sizes directly inline. This is highly useful when reversing the orientation of a standard distillation assembly, connecting a gas inlet cone to an expansion line, or linking secondary vapor trap elements. Each female socket is meticulously ground to standard international taper dimensions, ensuring a flush, gas-tight, and vacuum-capable seal when secured with standard joint clips.

Key Features

• Manufactured from high-purity borosilicate 3.3 glass for maximum chemical resistance and superior thermal durability
  
• Straight inline double female socket configuration optimized for clean, modular structural assemblies
  
• Meticulously ground interchangeable conical sockets to ensure a completely airtight, vacuum-compliant fit
  
• Heavy-wall center tubing engineered to withstand mechanical clamping pressures and localized physical strain
  
• Smooth, non-porous internal glass pathway to allow unrestricted fluid or vapor transition without sample retention
• International Standards
• Our double-socket plain adapters are engineered and manufactured in strict compliance with globally accepted dimensional and engineering parameters, ensuring seamless cross-brand compatibility:

• ISO 383 – Laboratory Glassware – Interchangeable Conical Ground Joints
  
• ASTM E438 – Standard Specification for Glasses in Laboratory Apparatus Manufacturing
  
• DIN 12249 – European Joint Geometry Regulations for Conical Ground Tapers
• Available in parallel standard joint sizes (e.g., 14/23 to 14/23, 19/26 to 19/26, 24/29 to 24/29, 29/32 to 29/32) as well as reducing/expanding configurations (e.g., 14/23 to 19/26 or 19/26 to 24/29). Custom lengths, intermediate center bulbs, or integrated vacuum takeoff side-arms can be custom manufactured per bulk specification.

Applications

Extensively utilized in synthetic organic chemistry setups, fractional distillation lattices, vacuum line distributions, pharmaceutical R&D lines, and academic teaching laboratories requiring flexible, modular structural coupling between ground glass assemblies.

Why Choose Our Products

• Export-grade glassware featuring optimal optical clarity and structural stress relief via thorough computer-controlled annealing
  
• Finely polished, precision-ground joint surfaces that eliminate micro-gaps and prevent vapor or pressure bypass
  
• Excellent mechanical centering and geometric alignment to eliminate unbalanced stress inside laboratory scaffolding frames
  
• Trusted OEM manufacturing partner for global laboratory equipment catalog vendors, procurement agencies, and wholesale scientific suppliers