Restek™ Standard Ferrules

Made of high-purity materials that will not contribute background impurities for sensitive and selective detectors; designed to seat securely in a variety of chromatography tube and pipe fittings

Product Code	Brand	Material	Size (English) Fitting	Diameter (English) Inside
13031640	Restek™ 20218	40% Graphite, 60% Vespel	1/16 in.	1/16 in.
13071630	Restek™ 20210	Graphite	1/4 in,	1/4 in.
13051670	Restek™ 20258	40% Graphite, 60% Vespel	1/4 in.	3/16 in.
13051630	Restek™ 20208	Graphite	1/8 in.	1/8 in.
13041640	Restek™ 20219	Graphite, Vespel	1/8 in.	0.125 in.
13051640	Restek™ 20220	40% Graphite, 60% Vespel	1/8 in.	Reduces to 1/16 in.
13061640	Restek™ 20221	40% Graphite, 60% Vespel	1/4 in.	1/4 in.

Description

For 1/16, 1/8, and 1/4 in. fittings.

100% Graphite ferrules

• High-density and contain no binders that can off-gas or absorb analytes
• With a smoother surface and cleaner edges than conventional graphite ferrules
• Ferrules are very soft and can be easily deformed for an effective seal with fused silica or glass columns
• Stable to 450°C (842°F)

Vespel™/Graphite ferrules

• 60%/40% blend, offering the best combination of sealing performance and ease of workability
• Seal with minimal torque and are preferred for vacuum and high-pressure uses such as GC/MS or other oxygen-sensitive detectors
• Hard material does not deform easily and may require retightening after several temperature cycles
• Reusable
• Stable to 400°C (752°F)