Specifications

Double Male Connector · Specifications

The following are general specifications. For custom sizes or special structures, please contact our sales team.

1. Joint Sizes & Distances

Joint Size	Distance Between Joints (mm)	Joint Type	Material
Please contact us to confirm the available specifications.

* Distance between joints is the length between the two joints (excluding the joints themselves).
* Both DIN (EU) and ASTM standards use 1:10 taper and are mutually compatible.
* Data based on industry public data
* Custom joint sizes and distances available upon request.

2. Joint Type Comparison

Type	Configuration	Application
Please contact us to confirm the available specifications.

* Double male and double female connectors are complementary, used for different joint type connections.

Product Description

The double male connector is a fundamental connecting adapter in standard joint glassware for connecting two inner joint (socket) components. Both ends feature standard outer taper joints (cones) for insertion into inner joints (sockets). Manufactured from borosilicate glass 3.3, it complies with ISO 3585 standards.

Key Features

Double Male Design: Both ends are outer joints (cones) for connecting inner joints (sockets)
Borosilicate Glass 3.3: ISO 3585 compliant, low expansion, thermal shock 280°C
Standard Joint: 1:10 taper, precision ground for reliable sealing
Multiple Sizes: Available in 14/20, 19/22, 24/40 joint sizes
Multiple Distances: 30mm ~ 175mm options
High Transparency: Easy observation of connection status
Chemical Resistant: Suitable for various organic solvents

Quality Assurance

Every double male connector 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 connecting outer joint components, use a double female connector.

Applications

Typical Applications

Inner Joint Connection

Connecting two inner joint (socket) components

Apparatus Extension

Increasing apparatus height or length

Gas Condensation

Serving as a gas condenser

Organic Synthesis

Various apparatus assembly and connections

Education

University chemistry lab teaching

Typical Apparatus Assembly

Inner joint component → Double Male Connector → Inner joint component

Condenser (inner) → Double Male Connector → Vacuum Adapter (inner)

Tip: The double male connector is the specialized adapter for connecting two inner joint components. Use accessories of the same joint size for optimal sealing.

Double Male Connector · Selection Guide

Select the right double male connector based on your connection needs:

🔗 Connecting Two Inner Joints

Both components have inner joints (sockets) that need to be connected.

Recommended: Double Male · Match component joint size

📏 Apparatus Extension

For increasing apparatus height or extending vapor path length.

Recommended: Double Male · 24/40 · 120mm or 175mm distance

🌬️ Gas Condenser Use

For use as a gas condenser.

Recommended: Double Male · 24/40 · ≥ 90mm distance

Selection Tip: First identify the joint types of the components to be connected. If both are inner joints (sockets), select a double male connector. For outer joint components, use a double female connector. Contact our technical team for assistance.

Operation & Maintenance

User Guide

Preparation

Inspect connector 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 connector — avoid overloading

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
Air dry after washing, store with soft paper between joints

Care & Notes

Show care & notes

Safety Tips

Watch temperature gradients during heating
Always work in a fume hood when handling hazardous chemicals

Do not

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