Pinch-Off Tube – OFHC Copper 🛠️

⚠️ This product is supplied without the CF flange outer ring. Please add the matching outer ring if required.

Pinch-off tubes may be used whenever an item must be sealed and removed, under vacuum, from a pumping station.

Our CF Copper Pinch-Off Tubes are made from ultra-pure OFHC (Oxygen-Free High Conductivity) copper, designed for use in high and ultra-high vacuum (UHV) environments. Ideal for creating permanent, leak-tight seals by mechanical pinch-off.

The CF flange is optional and reusable, allowing you to minimize waste and reduce recurring costs.
This product is supplied WITHOUT a CF flange outer ring and is intended as a replacement tube. If a complete assembly is required, a compatible CF flange outer ring can be added as a separate item.

Product Features

• Material: OFHC Copper (≥ 99.99% purity)
• Tube Length: 160mm (6 inches)
• Diameter Options:
  1/2" – suitable for pneumatic pinch-off tools
  3/8" – suitable for manual pinch-off (e.g., hand tools)
• Configuration:
  With CF flange as Bundle – compatible with standard ConFlat components
  Without flange – ideal as a replacement or for custom setups
• Surface Finish: Vacuum-compatible, smooth and burr-free
• Application: Designed for sealing evacuated lines in vacuum processes
• Origin: 🇨🇭 Swiss Made – Precision manufactured to the highest standards

Benefits ✅

• Excellent thermal and electrical conductivity
• Low outgassing – suitable for UHV
• Easy to pinch and deform for permanent seals
• Corrosion-resistant and hydrogen-compatible
• Fully compatible with CF vacuum hardware

Use Cases

• Ultra-high vacuum (UHV) systems
• Cryogenic systems
• Scientific research
• Industrial vacuum technology

Please select your preferred diameter and flange option before adding to cart.

🙏 Special thanks to Peng Yuan Han (@dso.org.sg) for the technical input and collaboration.