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May 1, 2014

Fused-silica, PEEK and polyimide nickel-clad tubing options

This company’s new nickel-clad tubing is available in fused-silica (FS), polyetheretherketone (PEEK) or polyimide-coated FS versions. The FS tubing’s thick nickel coating gives it a very high pressure rating. Nickel-clad FS tubing also allows the use of metal ferrules for improved leak-tight connections and permits resistive heating of columns and transfer lines. PEEK tubing allows direct connections using metal ferrules to produce enhanced pressure performance. Permitting use in pressures up to 40,000 psi, nickel-clad PEEK tubing is available with an outer diameter of 1/32 or 1/16 in. The nickel-clad polyimide-coated FS tubing is available in a thin-wall, low-mass version optimized for resistive heat applications. The nickel can be plated either directly over the fused silica polyimide layer or over the bare silica for temperature applications above 400°C. — Valco Instruments Co. Inc., Houston

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