Vacuum Fittings - CF Full Nipples: High Vacuum Sealing Solution

CF Full Nipples are precision vacuum fittings designed for high vacuum systems, featuring ConFlat (CF) flange standards to ensure ultra-high vacuum sealing. Widely used in semiconductor, scientific research, and aerospace applications.

Product Overview

CF Full Nipples are high-vacuum connectors designed according to ConFlat (CF) flange standards, featuring a fully threaded structure for superior sealing and secure connections. These fittings are widely used in vacuum pipelines, semiconductor equipment, scientific instruments, and spacecraft vacuum systems to maintain stable high-vacuum environments.

Structure Composition

Threaded Body

Material: 304L or 316L high-purity stainless steel for excellent corrosion resistance.

Design: Fully threaded design ensures tight connection with internally threaded vacuum components.

CF Flange End

Material: Same as threaded body for consistent performance.

Design: Precision-ground surface with minimal flatness error guarantees optimal sealing.

Sealing Gasket

Material: Pure copper or oxygen-free copper for superior elasticity and vacuum sealing.

Design: Precisely matches CF flange grooves to prevent gas leakage.

Key Features

Ultra-high vacuum compatibility – Suitable for environments up to 10⁻⁹ Torr and beyond.
Excellent sealing performance – Metal gaskets ensure long-term leak-free operation.
Secure and reliable connection – Full-thread design enhances stability.
Corrosion and wear resistance – Stainless steel construction extends service life.
Easy installation and maintenance – Standardized design simplifies assembly.

Applications

Scientific Research: Particle accelerators, electron microscopes, surface analysis instruments.

Semiconductor Manufacturing: Vacuum coating systems, etching machines, CVD/PVD equipment.

Aerospace: Satellite vacuum testing, spacecraft propulsion systems.

Technical Specifications

CF Full Nipples Frequently Asked Questions (FAQ)

1. What vacuum range are CF Full Nipples suitable for?

CF flange connectors are designed for ultra-high vacuum (UHV) environments up to 10⁻⁹ Torr and beyond, making them ideal for research vacuum systems and semiconductor vacuum equipment.

2. Why is copper used for sealing gaskets?

Stainless steel vacuum components typically use pure copper or oxygen-free copper gaskets due to their excellent plasticity and elasticity, ensuring long-term sealing under compression.

3. Are custom lengths available?

Yes, high vacuum seals can be customized to meet specific length requirements for various applications.

4. Are special tools required for installation?

Full-threaded vacuum couplings only require a standard torque wrench for proper installation to ensure even flange pressure and prevent leaks.

5. How to determine if sealing gaskets need replacement?

If ultra-high vacuum components show pressure rise or repeated leaks, inspect copper gaskets for deformation or wear.

6. Can they be used with corrosive gases?

For aerospace vacuum assemblies exposed to corrosive media, we recommend 316L stainless steel for enhanced corrosion resistance.

7. What's the difference between CF and KF flanges?

In vacuum coating equipment parts, CF flanges use metal seals for UHV applications while KF flanges typically use rubber seals for medium-low vacuum.

8. Are the fittings reusable?

Semiconductor vacuum equipment components can be reused provided sealing surfaces remain undamaged (replace gaskets when necessary).

9. How to clean and maintain CF Full Nipples?

For research vacuum system components, use lint-free cloths with alcohol – avoid chlorine-based cleaners to protect metal surfaces.

10. Do you provide leak test reports?

Some suppliers can provide helium mass spectrometer leak test reports for ultra-high vacuum components to verify sealing performance.