K1668-3 - Lincoln Electric 8-Inch Fume Extraction Hose with Magnetic Hood (16.4 ft)

Technical Overview of the Lincoln Electric K1668-3 Hose and Hood Set

The Lincoln Electric K1668-3 is a specialized accessory designed to enhance the versatility and reach of mobile fume extraction systems. Engineered specifically for compatibility with the Lincoln Electric Mobiflex® 200-M, Mobiflex® 400-MS, and Prism® Mobile units, this set provides a robust solution for capturing welding fumes in difficult-to-access locations. The assembly consists of a high-diameter flexible hose paired with a magnetic collection hood, offering a seamless integration with existing filtration hardware.

The hose itself features a substantial diameter of 8 inches (203 mm), which is critical for maintaining high cubic feet per minute (CFM) airflow rates required for effective particulate removal. With a total length of 16.4 feet (5 meters), it allows operators to position the extraction point significantly further from the base unit than standard extraction arms permit. This is particularly beneficial in complex fabrication environments where the base unit cannot be positioned immediately adjacent to the workpiece due to floor obstructions or confined spaces.

Structurally, the hose is reinforced with external steel rings. This design choice is superior to internal wire reinforcement for heavy industrial applications, as the external rings act as a protective exoskeleton. They absorb impact and prevent the hose from being crushed or kinked when dragged across shop floors or around equipment. This ensures consistent airflow is maintained even under physical stress. The included connection clamp ensures a leak-free seal at the base unit, maximizing the system's vacuum efficiency.

The magnetic hood is a defining feature of this set. Unlike standard friction-positioned hoods, this unit utilizes strong magnets to attach directly to ferromagnetic workpieces. This allows for precise placement of the capture zone relative to the arc, ensuring optimal fume uptake without requiring constant manual adjustment by the operator. This set is an essential component for facilities prioritizing air quality compliance and operational flexibility.