Thin Film Materials Logo
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Swagelok® Caps

Swagelok® Caps, Plugs, & Nuts

Swagelok® Caps, Plugs, & Nuts: Essential Sealing and Protection Components for Tubing Systems

Swagelok® Caps, Plugs, & Nuts from TFM provide dependable sealing, termination, and assembly functions across a wide range of gas and fluid handling systems. These components complement Swagelok’s tube fitting lineup by enabling secure closures, temporary shutdowns, and precise remakes of critical tubing connections. Whether used during maintenance, system isolation, or in final installation, these parts ensure leak-proof, torque-free performance with maximum compatibility.

Designed for use in instrumentation, vacuum, and process control systems, Swagelok caps, plugs, and nuts are available in stainless steel for gas applications and brass for water systems—offering material-specific performance in demanding environments.

Key Features of Swagelok® Caps, Plugs, & Nuts:

  • Leak-Proof Seals at Every Connection
    When paired with Swagelok ferrules and fittings, these components maintain reliable, gas-tight or liquid-tight seals without excessive torque, preserving both tube and fitting integrity.

  • Protection Against Costly and Hazardous Leaks
    Swagelok caps and plugs help isolate unused ports and lines, preventing leaks, contamination, and system damage during downtime or maintenance.

  • Application-Specific Material Choices

    • Stainless Steel Components: Ideal for gas systems, aggressive chemicals, or UHV/vacuum environments.

    • Brass Components: Suited for water systems, general-purpose fluid handling, or non-corrosive media.

  • Nuts Designed for Repeatable Assembly
    Swagelok nuts enable secure remake of connections, applying uniform compression force to ferrule sets—critical for system expansion or realignment.

  • Ease of Use and System Compatibility
    These components are precision-machined for Swagelok fittings and support both fractional and metric tubing sizes, allowing universal use across integrated system designs.

Applications:

  • Capping unused tube outlets or valve ports during testing or maintenance

  • Plugging instrumentation panels or sample lines to prevent contamination

  • Locking ferrules into place for reliable compression fitting remakes

  • Sealing branch lines in gas manifolds or fluid skids

  • Supporting modular builds where future expansion is planned

TFM offers a complete portfolio of Swagelok-compatible fittings and accessories, including ferrule sets, union elbows, tees, NPT adapters, and bulkhead connectors. With Swagelok® Caps, Plugs, & Nuts, you can confidently build, maintain, and scale your tubing systems with total sealing integrity.

Ordering Table

Reference Material Tube OD 1 Part Number
Swagelok Cap Stainless Steel 1/8" SS-200-C
Swagelok Cap Stainless Steel 1/4" SS-400-C
Swagelok Cap Stainless Steel 3/8" SS-600-C
Swagelok Plug Stainless Steel 1/8" SS-200-P
Swagelok Plug Stainless Steel 1/4" SS-400-P
Swagelok Plug Stainless Steel 3/8" SS-600-P
Swagelok Cap Brass 1/4" B-400-C
Swagelok Cap Brass 3/8" B-600-C
Swagelok Plug Brass 1/4" B-400-P

Reviews

There are no reviews yet.

Be the first to review “Swagelok® Caps, Plugs, & Nuts”

Your email address will not be published. Required fields are marked *

Related Products

Related products

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.

 

Shopping Cart
Scroll to Top