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Gold-Plated OFHC Copper Gaskets for ConFlat (CF) UHV Flanges

Gold-Plated OFHC Copper Gaskets for ConFlat (CF) UHV Flanges

Gold-Plated OFHC Copper Gaskets for ConFlat (CF) UHV Flanges

Gold-Plated OFHC Copper Gaskets for ConFlat (CF) UHV Flanges, offered by TFM, are designed to deliver exceptional performance in ultra-high vacuum (UHV) and corrosive environments. These gaskets combine the high thermal conductivity and malleability of annealed oxygen-free high conductivity (OFHC) copper with the corrosion resistance and inertness of a gold plating—making them an ideal solution for precision vacuum sealing.

Key Features

  • High-Purity OFHC Copper Core
    The gaskets are made from oxygen-free high conductivity copper with over 99.99% purity, ensuring minimal outgassing and superior thermal conductivity.

  • Durable Gold Plating
    Each gasket is electroplated with a thin, uniform layer of gold to enhance chemical resistance, reduce oxidation, and improve the long-term stability of the vacuum seal.

  • Reliable UHV Sealing
    Gold-Plated OFHC Copper Gaskets conform easily to ConFlat (CF) flange knife edges, forming a leak-tight metal-to-metal seal compatible with pressures down to 10⁻¹¹ Torr.

  • Excellent for Corrosive Environments
    The gold plating protects the copper from corrosive gases, moisture, and other contaminants—ideal for harsh process conditions.

  • Bakeable and High-Temperature Ready
    Withstand bake-outs and thermal cycles up to 450°C in vacuum environments without loss of plating integrity.

Applications

  • UHV Research and Analytical Instruments
    Widely used in UHV chambers for spectroscopy, electron microscopy, and surface science due to their clean sealing and resistance to corrosion.

  • Semiconductor and Thin Film Deposition
    Excellent for high-purity vacuum systems involved in sputtering, ALD, or PVD processes, where contamination must be minimized.

  • Cryogenics and Superconducting Systems
    Maintain structural and chemical stability at cryogenic temperatures while offering excellent thermal conductivity.

  • Corrosive Process Gas Systems
    Preferred in applications where standard copper gaskets may oxidize or degrade over time due to aggressive chemicals or reactive gases.

  • Synchrotrons and Particle Accelerators
    Support critical sealing performance in advanced physics environments where long-term UHV is mandatory.

Technical Specifications

  • Material: OFHC Copper (annealed)

  • Plating: Gold (thin, uniform electroplating)

  • Purity: Copper >99.99%

  • Vacuum Rating: Down to 10⁻¹¹ Torr

  • Temperature Tolerance: Up to 450°C

  • Flange Compatibility: ConFlat (CF) standard UHV flanges

  • Surface Finish: Smooth, burr-free edges for clean sealing

  • Usage: Single-use gaskets for maximum sealing integrity

Benefits of Gold-Plated OFHC Copper Gaskets

  • Combines softness and sealing performance of annealed copper with inert, corrosion-resistant gold coating

  • Reduces chemical reactivity in demanding vacuum or gas process systems

  • Minimizes flange contamination risk from oxidation or surface degradation

  • Extends the shelf life of unused gaskets in storage due to gold’s resistance to tarnish

  • Maintains seal quality even in repeated high-temperature bake-outs

Why Choose TFM?

TFM’s Gold-Plated OFHC Copper Gaskets for ConFlat (CF) UHV Flanges are precision-manufactured under strict quality controls to meet the rigorous standards of the scientific, industrial, and semiconductor sectors. Whether you’re working in cutting-edge physics research or maintaining high-vacuum manufacturing systems, these gaskets deliver long-term performance, chemical stability, and vacuum integrity.

Ordering Table

Drawing Flange OD Gasket ID Note Part Number
Tooltip DN16CF (1.33" OD) 0.640 — GA-0133G
Tooltip DN25CF (2.125" OD) 1.010 — GA-0212G
Tooltip DN35CF-DN40CF (2.75" OD) 1.450 — GA-0275G
Tooltip DN35CF-DN40CF (2.75" OD) 1.528 — GA-0275LBG
Tooltip DN50CF (3.375" OD) 2.010 GA-0337G
Tooltip DN63CF (4.50" OD) 2.506 — GA-0450G
Tooltip DN75CF (4.625" OD) 3.010 — GA-0462G
Tooltip DN100CF (6.00" OD) 4.006 GA-0600G
Tooltip DN125CF (6.75" OD) 5.010 — GA-0675G
Tooltip DN160CF (8.00" OD) 6.007 — GA-0800G
Tooltip DN200CF (10.00" OD) 8.007 — GA-1000G
Tooltip DN250CF (12.00" OD) 10.007 — GA-1200G
Tooltip DN275CF (13.25" OD) 10.792 — GA-1325G
Tooltip DN295CF (14.00" OD) 11.811 — GA-1400G
Tooltip DN350CF (16.50" OD) 14.037 — GA-1650G

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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