SS-QC4-B-400K4 SWAGELOK Connect Body Tube Fitting Key

Review SWAGELOK Quick Connect Body 1/4 Inch Tube Fitting Qc4 Yellow Key

Introducing the Swagelok SS-QC4-B-400K4 ConnectBody 1/4 Inch Tube Fitting with QC4 Key. This high-performance tube fitting is designed for use in hydrocarbon and other process applications where reliable sealing and pressure containment are essential.

The SS-QC4-B-400K4 is a part of Swagelok's ConnectBody family of fittings, which offers quick and easy installation with no special tools required. The unique body design features a self-aligning, full-contact seat that ensures proper seating of the gasket, even in difficult-to-reach locations.

This particular fitting is constructed from Type 316L stainless steel, a material known for its excellent corrosion resistance and strength. The body is also backed by Swagelok's industry-leading warranty, providing peace of mind for even the most demanding applications.

The fitting comes with a QC4 key, which is a patented feature that ensures proper gasket seating and eliminates the need for torque wrenches or other special tools. The key engages with the gasket as it is being tightened, providing a consistent, uniform force that guarantees a leak-free seal.

The 1/4 inch nominal size of this fitting makes it suitable for use in a wide range of industrial and commercial applications, from compressed air systems to hydraulic and pneumatic lines. The fitting can handle working pressures up to 4,000 psi (27,580 kPa), making it a versatile and reliable option for high-pressure applications.

In summary, the Swagelok SS-QC4-B-400K4 ConnectBody 1/4 Inch Tube Fitting with QC4 Key is a high-quality, easy-to-install fitting that offers reliable sealing and pressure containment in even the most demanding applications. Its self-aligning design, corrosion-resistant construction, and patented QC4 key make it a smart choice for any industrial or commercial application where leak-free performance is essential.

Swagelok SS-QC4-B-400K4 is a 1/4 inch tube fitting with a QC4 keyway, made of Seawater 4 (SW4) material. This type of fitting is commonly used in the oil and gas industry, as well as other applications where seawater or high-pressure environments are present. Here are some pros and cons of buying this Swagelok tube fitting:

1. High-quality construction: Swagelok is a well-known brand in the industrial valves and fittings market. Their products are known for their durability, reliability, and high-performance standards. The SS-QC4-B-400K4 fitting is no exception, as it is made of Seawater 4 material, which provides excellent resistance to corrosion and erosion.

2. Leak-free connections: Swagelok uses a unique gasket design and a proprietary thread sealing process to ensure leak-free connections. This is particularly important in high-pressure applications, where even a small leak can lead to costly repairs or dangerous situations.

3. Interchangeability: Swagelok fittings are designed to be interchangeable with other brands' fittings that meet the same industry standards. This can be a significant advantage in maintenance and repair situations, where you may need to work with a variety of fittings from different suppliers.

4. Long service life: Swagelok fittings are built to last, and the SS-QC4-B-400K4 fitting is no exception. With proper maintenance and use, this fitting can provide many years of reliable service in even the most challenging environments.

1. Cost: Swagelok fittings are generally more expensive than other brands' fittings due to their high-quality construction and proprietary designs. The SS-QC4-B-400K4 fitting is no exception, and you can expect to pay a premium price for this product.

2. Longer lead times: Swagelok fittings are custom-made to order, so lead times can be longer than for stock fittings from other suppliers. This can be a disadvantage if you need the fitting urgently for a repair or maintenance project.

3. Limited availability: Swagelok fittings are not as widely available as fittings from other suppliers, so you may need to search harder to find a distributor or supplier that carries this particular product.

The Swagelok SS-QC4-B-400K4 tube fitting is a high-quality, reliable, and durable product that is well-suited for applications in the oil and gas industry and other challenging environments. Its advantages include leak-free connections, interchangeability with other brands' fittings, long service life, and high-quality construction. However, its disadvantages include a higher cost than other brands' fittings, longer lead times, and limited availability. Ultimately, whether or not to buy this product depends on your specific application requirements and budget constraints. If you need a high-performance, leak-free connection in a challenging environment and are willing to pay a premium price for a reliable and durable product, then the Swagelok SS-QC4-B-400K4 tube fitting is an excellent choice. If cost is a major factor, or if you need the fitting urgently, then you may want to consider other options.

Details:

Manufacturer: Swagelok. Swagelok SS-QC4-B-400K4 stainless steel quick connect body yellow key brand new. Fully oem sealed, never opened.

Genuine Swagelok stainless steel qc4 quick connect body with keyed yellow sleeve for instrumentation and high-purity fluid/chemical systems. Performance specifications. Connection type: Swagelok tube fitting. O-ring material: fluorocarbon FM Vito.

Ideal for analytical systems, gas sampling, lab lines, nitrogen, hydraulics, and process fluids. High-pressure instrumentation coupling, secure connection integrity. Sleeve type: yellow keyed identification/media control. Oem Swagelok stainless qc body yellow keyed sleeve media control.

Part number: SS-QC4-B-400K4. Precision clean break reduces spillage and air inclusion. Series: qc4 quick connect. Designed for reliable, high-pressure couplings and clean break connections in laboratory, analytical, oil gas, semiconductor, processing environments.

specifications pipehosefit:

• brand: Swagelok
• mpn: Ss-qc4-b-400k4
• part type: Tube Fitting

seller pipehosefit:

• # reviews: 550
• rating: 100.0%
• city: trenton, new jersey

offer pipehosefit:

• options: ship-to-home
• availability: in stock
• prices: $34.50–$54.99
• item condition:
  • New – Open box
  • New
  • Seller refurbished
• best offers: true
• started: november 23, 2025
• sold #: 19

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• transit: 5-10 days
• class: standard
• type: fixed
• service: usps ground advantage

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general pipehosefit:

• category: Business & Industrial > Adapters > Pipe Hose > Compression Fittings

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• method: money back
• policy: returns accepted
• time: 30 days
• paid by: seller