Description
MB501 Insulating Washer / Seal – MB501 Water‑Cooled Torch
This thin insulating washer (part number 030.0019) fits between the MB501 swan neck and tip adaptor. It seals and electrically isolates internal components—crucial for safe operation and consistent gas flow.
✅ Product Details & Specs
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Compatible Models: Fits Binzel-style MB501 and MB401 water-cooled MIG torches
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Material: High-temperature electrical insulator with gasket properties
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Dimensions:
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Outer diameter: ~20 mm
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Inner diameter: ~12 mm
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Thickness: ~1 mm
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Part Number: 030.0019 (or OEM equivalent)
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Pack Option: Often sold in multi-packs (e.g. 10-piece kits)
📋 Features & Benefits
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Provides safe electrical insulation between the neck and contact tip holder
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Helps maintain proper gas sealing, which ensures consistent shielding around the arc
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Prevents nozzle components from shorting or heating incorrectly—vital for water-cooled torch integrity
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Light wear part—easy and inexpensive to replace as part of torch maintenance





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