About Swagelok
Swagelok Fluid Connection Solutions
Since 1947, Swagelok has been the global leader in fluid system connectors, fittings, valves, and tubing engineered for the most demanding industrial applications. Their low dead volume tube fittings are manufactured in stainless steel, brass, and specialized alloys to withstand harsh environments including sour gas, chemical processing, and high-pressure hydraulic systems.
Swagelok's product portfolio spans NPT pipe fittings from 1/16" to 2 inches with leak-tight sealing, medium-pressure FK series fittings rated up to 20,000 psig for oil and gas exploration and hydrogen applications, and socket weld configurations for superior vibration resistance in industrial fluid systems.
The company's stainless steel tube fittings deliver consistent, corrosion-resistant performance across industries including aerospace, pharmaceutical, semiconductor, marine, and power generation, where fluid system reliability directly impacts operational safety and uptime.
Every Swagelok fitting is precision manufactured to optimize sealing and minimize galling, ensuring repeatable performance across thousands of installations. Their technical support engineers work with customers to specify the exact connection solution for challenging media, extreme temperatures, and mission-critical applications.
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Frequently asked questions
What's the difference between Swagelok tube fittings and NPT pipe fittings?
Swagelok's ferrule-based tube fittings create a metal-to-metal seal ideal for high-pressure, vibration-prone applications like hydraulic and gas systems, while NPT (National Pipe Thread) fittings use tapered threads and typically require thread sealant. Tube fittings are preferred for precision applications where minimal leakage is critical; NPT fittings are standard in plumbing and lower-pressure industrial piping.
Which Swagelok fitting materials work best for corrosive or sour gas applications?
316 stainless steel offers superior corrosion resistance in sour gas and acidic chemical environments, while Swagelok's specialized alloys and duplex stainless options meet NACE and ASTM standards for hydrogen sulfide and CO₂ service. Always confirm your application's specific media compatibility and temperature range with Swagelok's technical data sheets.
Do Swagelok fittings require special tools for installation?
Swagelok recommends using their tube fitting installation tool or equivalent precision wrenches to achieve the proper ferrule compression without over-torquing, which can damage the fitting. Most Swagelok distributors provide installation guides and torque specifications specific to each fitting size and material.
How do I select the right tube fitting for a high-pressure hydraulic system?
Start with your system's maximum operating pressure and look for Swagelok's medium-pressure (FK) or high-pressure series rated well above your peak demand—typically 1.5× to 2× your system relief pressure. Then confirm port thread size, inlet/outlet configuration, and material compatibility with your hydraulic fluid type.
Can I mix and match Swagelok fittings from different product lines in the same system?
Swagelok fittings are designed as complete, matched systems; mixing tube and NPT fittings, or high-pressure with standard pressure ratings, can compromise sealing integrity and safety. Always use fittings rated for your system's full operating envelope and consult Swagelok's compatibility matrix before mixing product families.