Product Overview
The LUBE USA 186201 tubing coupler is a union fitting designed to connect two sections of 4mm lubrication tubing. It features dual 5/16-24 compression connections, allowing two tubes to be joined in a straight line.
This fitting is commonly used to extend, repair, or reconnect lubrication lines in centralized lubrication systems.
Applications
- Centralized lubrication systems
- CNC machines and machining centers
- Repairing damaged tubing lines
- Extending lubrication tubing runs
👉 Couplers (union fittings) are used to connect two tubing sections together in-line, allowing easy system repair or expansion
Key Features
- Connects two 4mm (5/32”) tubing lines
- Dual 5/16-24 compression connections
- Straight union design for in-line connections
- Compatible with compression sleeves and tube inserts
- Ideal for tubing repair and extension
- Durable construction for industrial use
Why This Part Matters
In lubrication systems, tubing can become damaged, worn, or require extension.
Without a coupler:
- Tubing must be replaced entirely
- Repairs become more difficult
- Downtime increases
This union fitting allows you to quickly connect two tubing sections, restoring system function without replacing the entire line.
When to Use This Coupler
- When repairing a broken or damaged line
- When extending lubrication tubing
- When modifying or rerouting a system
- During maintenance or system upgrades
Specifications
- Part Number: 186201
- Type: Tubing coupler / union
- Connection: 5/16-24 × 5/16-24
- Tubing Size: 4mm (5/32”) × 4mm (5/32”)
- Application: Tubing-to-tubing connection
📞 Need Help Matching Tubing & Fittings?
Not sure if this is the right coupler for your system?
👉 Call us or request a quote—we can help match the correct tubing, fittings, and components.





