FAQ

Do I need to use a wrench to tighten finger-tight fittings?

31 Jul 2025

For graphite and 60/40 Vespel/graphite ferrules, we have found that the additional torque gained using a finger-tight column nut fitting allows most users to pre-seat ferrules onto the column without using a wrench. But, for 85/15 Vespel/graphite ferrules, a wrench may still be required. Using finger-tight fittings reduces the time and effort needed for column installation and decreases the chance of overtightening the fitting.

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  • Restek Corporation

    Restek is a leading provider of chromatography columns, accessories, and certified reference materials. Trust Restek for reliable, high-quality analytical solutions.

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GNOT4969