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Swagelok VCR Copper (Cu) Gaskets

Swagelok VCR Socket Weld Glands

Swagelok VCR Socket Weld Glands: Weldable Face-Seal Connections for High-Purity and UHV Systems

Swagelok VCR Socket Weld Glands are high-performance fittings designed to provide permanent, weldable connections between tubing and Swagelok VCR face-seal systems. With a socket-weld interface on one end and a male or female VCR sealing face on the other, these glands allow engineers to integrate UHV-compatible, metal-gasket-sealed joints into welded stainless steel gas lines, ensuring leak-tight performance in low-pressure, bakeable, and ultra-high vacuum (UHV) environments.

Machined from 316L stainless steel, these weld glands are ideal for systems where durability, cleanliness, and high-temperature tolerance are essential—such as semiconductor manufacturing, vacuum research labs, and process gas delivery panels.

Key Features of Swagelok VCR Socket Weld Glands:

  • Permanent, Welded Gas Connections
    Socket weld design provides a strong, clean weld interface for orbital or manual TIG welding, enabling long-term system integrity.

  • VCR Metal Gasket Face-Seal Compatibility
    The gland’s VCR face uses Swagelok’s industry-standard sealing method with copper or stainless steel gaskets to ensure torque-independent, elastomer-free sealing.

  • UHV and Cleanroom Ready
    Precision-machined surfaces and 316L stainless steel construction support pressures down to 10⁻⁹ Torr and maintain clean gas purity in sensitive analytical or fabrication environments.

  • Thermal Resilience

    • Stainless steel gasket compatibility supports bakeouts to 538°C, essential for outgassing or sterilizing vacuum systems.

    • Copper gaskets perform reliably up to 204°C, ideal for regulated gas lines or instrumentation tubing.

  • Versatile System Integration
    Use Swagelok VCR Socket Weld Glands to transition from welded pipe to face-seal fittings in regulators, gas panels, isolation valves, or vacuum chambers.

Applications:

  • Joining fixed stainless steel tubing to VCR components in clean gas lines

  • Weld-in port transitions in UHV vacuum manifolds

  • Connecting to helium test panels, gas bottle regulators, or valve inlets

  • High-purity gas transport in semiconductor fab tools or mass spec systems

TFM also supplies the complete ecosystem of Swagelok VCR parts, including nuts, gaskets, male/female unions, elbows, tees, and weld stub adapters, providing a full solution for your gas handling and vacuum infrastructure.

Ordering Table

Reference Material Tube OD 1 Part Number
VCR Socket Weld Glands Stainless Steel 1/8" 2FVCR-GL
VCR Socket Weld Glands Stainless Steel 1/4" 4FVCR-GL
VCR Socket Weld Glands Stainless Steel 3/8" 6FVCR-GL
VCR Socket Weld Glands Stainless Steel 1/2" 8FVCR-GL

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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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