Specifications

105° Elbow · Specifications

The following are common specifications. Both ends are the same joint size. For custom sizes or special structures, please contact our sales team.

Request custom specs

1. Joint Sizes (Same Size Both Ends)

Joint Size	Max Inner Diameter (mm)	Joint Length (mm)	Joint Type	Angle	Material
Please contact us to confirm the available specifications.

* Both DIN (EU) and ASTM standards use 1:10 taper and are mutually compatible.
* Both ends are the same joint size to ensure matching connections.
* Supports full range from 10/19 to 60/45.
* Custom joint sizes and tube lengths (200mm, 300mm, etc.) available upon request.

2. Comparison with 75° Elbow

Feature	75° Elbow	105° Elbow
Please contact us to confirm the available specifications.

* 105° elbow provides a larger angle change for special apparatus layouts.
* Some manufacturers offer adjustable 75°-105° elbows.
* Tiandi Labware offers 200mm and 300mm tube lengths.

Product Description

The 105° elbow is a connecting adapter in standard joint glassware for changing the direction of tubing at a larger angle, commonly used in special apparatus layouts requiring significant redirection of vapor or distillate flow. The main body is a 105° bent tube with standard outer taper joints (cones) at both ends for connection to inner joint (socket) components. Both ends are the same joint size, with support for any standard joint size from 10/19 to 60/45. Compared to the 75° elbow, the 105° elbow provides a larger angle change for optimized apparatus layout. Manufactured from borosilicate glass 3.3, it offers excellent thermal and chemical resistance.

Key Features

Borosilicate Glass 3.3: ISO 3585 compliant, low expansion, thermal shock 280°C, high transparency
Standard Joint: 1:10 taper, precision ground for reliable sealing
Double Male Design: Both ends are outer joints (cones) for connecting inner joints (sockets)
Same Size Both Ends: Ensures matching connections
Full Range Sizes: Supports any standard joint size from 10/19 to 60/45
105° Bend Angle: Provides larger angle change for special apparatus layouts
High Transparency: Easy observation of vapor flow
Chemical Resistant: Suitable for various organic solvents

Quality Assurance

Every 105° elbow undergoes strict dimensional inspection, joint taper testing, and thermal resistance testing to ensure compliance with applicable standards.

Note: Ensure joints are clean and dry before use to prevent sticking. Insert with gentle twisting motion, do not force. Use accessories of the same joint size for optimal sealing. For standard angle changes, consider the 75° elbow.

Applications

Typical Applications

Distillation Apparatus

Connect distillation flask and condenser with large angle change

Fractionation Apparatus

Optimize connection angle between fractionating column and condenser

Vacuum Distillation

Optimize tubing routing under reduced pressure

Special Apparatus Layout

Flexible adjustment for limited bench space

Organic Synthesis

Various apparatus assembly and connections

Typical Apparatus Assembly

Distillation flask (inner) → 105° Elbow (outer) → Condenser (inner)

Fractionating column (inner) → 105° Elbow (outer) → Condenser (inner)

Tip: The 105° elbow is a key component for special apparatus layouts requiring large direction changes. Use accessories of the same joint size for optimal sealing.

105° Elbow · Selection Guide

Select the right 105° elbow based on your connection needs:

🔀 Large Direction Change

For significant redirection of tubing or optimized apparatus layout.

Recommended: 105° Elbow · 24/40 · Double Male

🔗 Special Apparatus Layout

For limited bench space or bypassing other equipment.

Recommended: 105° Elbow · Match component joint size

🔗 Vacuum Distillation

For optimizing tubing routing in vacuum distillation.

Recommended: 105° Elbow · 24/40 or 29/42

📏 Micro/Small Scale

For small-scale reactions requiring large direction changes.

Recommended: 105° Elbow · 14/20 or 19/22

Selection Tip: For large direction changes or special apparatus layouts, the 105° elbow is recommended. For standard angle changes, consider the 75° elbow. Select size based on scale: 14/20 for micro, 19/22 or 24/40 for standard, 29/42+ for pilot scale. Contact our technical team for assistance.

Operation & Maintenance

User Guide

Preparation

Inspect elbow for cracks, chips, or scratched joints
Clean joint surfaces with a soft cloth or cotton swab
Apply a small amount of vacuum grease if joints are too tight

Installation & Connection

Confirm joint sizes match the components to be connected
Insert both ends into the inner joint components with gentle twisting motion
Insert with gentle twisting motion, do not force
Secure components with clamps for stability

Operation Notes

Check all joints for proper sealing after connection
Consider weight load on the elbow — avoid overloading
With 105° angle, pay attention to the overall center of gravity

Disassembly & Cleaning

Gently twist to detach components
Clean immediately after use to prevent residue buildup
Wash joints with soft brush and detergent, avoid hard objects
Clean the interior with ethanol or acetone if needed
Air dry after washing, store with soft paper between joints

Care & Notes

Show care & notes

Safety Tips

105° elbow has a larger angle; ensure apparatus stability
Watch temperature gradients during heating
Always work in a fume hood when handling hazardous chemicals

Do not

Do not use cracked or chipped elbows for experiments
Align components properly during connection to avoid stress