Description
Product Overview
The LUBE USA 106821 copper tubing (CT-4) is designed for use in centralized lubrication systems where strength and durability are required. It carries oil from pumps to distribution points and machine components, providing a reliable and consistent flow path.
Unlike flexible nylon tubing, copper tubing offers a rigid solution for permanent installations and demanding environments.
Applications
- Centralized lubrication systems
- CNC machines and machining centers
- Permanent oil line installations
- High-pressure or high-temperature environments
👉 Copper tubing is commonly used for main and tail lubrication lines due to its strength and reliability
Key Features
- 4mm outer diameter / ~3mm inner diameter
- High strength and rigid construction
- Handles higher pressure than nylon tubing (~6.9 MPa)
- Resistant to heat and mechanical damage
- Ideal for permanent or fixed routing
- Sold in coil form (typically 25 ft lengths)
Why This Tubing Matters
In lubrication systems, tubing must reliably deliver oil under pressure and in harsh conditions.
Flexible tubing may:
- Move or vibrate
- Wear over time
- Be damaged in exposed areas
Copper tubing provides a rigid, durable alternative that:
- Maintains shape and routing
- Resists vibration and damage
- Ensures consistent oil delivery
When to Use This Tubing
- When a rigid, permanent line is needed
- In high-pressure lubrication systems
- In exposed or high-heat environments
- When replacing damaged or worn tubing
Specifications
- Part Number: 106821
- Model: CT-4
- Outer Diameter: 4mm
- Inner Diameter: ~3mm
- Material: Copper (phosphor deoxidized)
- Working Pressure: ~6.9 MPa (~1,015 PSI)
- Form: Coil (commonly 25 ft)
- Application: Lubrication oil transfer
📞 Need Help Choosing Between Nylon & Copper Tubing?
Not sure which tubing is right for your system?
👉 Call us or request a quote—we can help you choose the correct tubing and fittings.



