Vespel® Ferrules – Sold in packsof 10

• Upper temperature limit: 350°C
• 100% high temperature DuPont polyimide
• Precision-drilled ID; no imperfections from molding
• One-piece design requires no back ferrules
• Fairly hard; tends to seal permanently to the column

Graphite Ferrules – Sold in packs of 10

• Upper temperature limit: 450°C
• High-purity Graphite; preferred for capillary GC use
• Ideal for glass-to-metal connections; does not stick to glass
• Precision formed; flash free ID
• Reusable if not over tightened
• One-piece design requires no back ferrule

Vespel®/ Graphite Ferrules – sold in packs of 10

• Upper temperature limit: 400°C
• Made from quality DuPont polyimide/graphite blend
• Recommended for GC/MS interface applications
• One-piece design requires no back ferrule
• Precision drilled ID