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OTC INSULATOR
Description
Technical specification
OTC Daihen MIG Torch Insulators – U4167L00 & U4173L00
OTC INSULATOR U4167L00 and U4173L00 are OEM components used in high-performance MIG welding torches. These parts act as dielectric insulators and gas diffusers, installed between the contact tip and nozzle, and are essential for maintaining arc stability, consistent gas shielding, and torch longevity.
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- U4167L00 is made for 350 A OTC torches such as BT3510, D-Series, or WTCX-350.
- U4173L00 is the equivalent insulator for 500 A torch models, like WTCX-500 and BT5010.
Both models are built from heat-resistant ceramic, sometimes enclosed in a brass or steel shell, to provide electrical isolation and durable performance under high duty cycles.
| Feature | U4167L00 | U4173L00 |
|---|---|---|
| Compatible Torch | BT3510, WTCX‑350 (350 A) | WTCX‑500, BT5010 (500 A) |
| Part Number | U4167L00 | U4173L00 |
| Material | Ceramic core, brass shell | Ceramic core, brass shell |
| Wire Size Range | 0.8–1.6 mm | 1.0–1.6 mm |
| Function | Tip insulation & gas alignment | Tip insulation & gas alignment |
Key Features & Benefits
-
- Dielectric Protection
Prevents short circuits between the nozzle and contact tip. - Gas Flow Stabilization
Helps maintain a laminar shielding gas stream to prevent weld porosity. - Thermal Resistance
Ceramic construction withstands high temperatures during continuous welding. - Exact Fit for OTC Torches
OEM-designed for seamless integration and minimal spatter buildup.
- Dielectric Protection
When to Replace?
-
- If your torch shows gas leakage or inconsistent arc.
- After heavy spatter or overheat damage.
- During scheduled preventive maintenance for high-duty robotic setups.
OTC U4167L00 and U4173L00 insulators are crucial consumables to ensure the safety, performance, and precision of your MIG torch system—whether you’re running 350 A or 500 A machines. Using original OEM parts reduces the risk of torch failure, spatter buildup, and inconsistent welds.
Need help identifying which insulator fits your OTC torch model? Let me know and I’ll help you match it accurately.
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