Stainless Steel Double Ferrule Compression Tube Fitting 3–12mm

Stainless Steel 304 Double-Ferrule Compression Tube Fitting

Achieve leak-free, high-pressure tube connections with this precision-engineered double-ferrule compression tube fitting. Crafted from heavy-duty 304 stainless steel, these straight coupler adapters are built to withstand demanding industrial and DIY applications — from hydraulic lines to pneumatic systems and laboratory equipment.

Available in six diameter options (Φ3, Φ4, Φ6, Φ8, Φ10, and Φ12mm), these fittings are compatible with stainless steel, copper, and rigid or semi-rigid plastic tubing, making them an incredibly versatile addition to any toolkit or plumbing setup.

Key Features

• Premium 304 Stainless Steel — Heavy-duty construction with excellent corrosion and oxidation resistance for long-lasting performance
• Double-Ferrule Design — Provides a secure, vibration-resistant, leak-free seal on every connection
• Six Size Options — Φ3–Φ3, Φ4–Φ4, Φ6–Φ6, Φ8–Φ8, Φ10–Φ10, Φ12–Φ12mm to suit your exact application
• High Pressure Rated — Nominal working pressure: 16 MPa–20 MPa
• Wide Temperature Range — Rated for -100°F to +660°F, ideal for extreme environments
• Multi-Tube Compatibility — Connects stainless steel, copper, and rigid/semi-rigid plastic tubing
• Standard Compliant — Manufactured to GB3733.1–3765-83 standard

Specifications

Package Contents

• 1 × Double-Ferrule Compression Tube Fitting (size of your choice)

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For further information on industrial tube fitting standards and safety practices, refer to the OSHA Hydraulics & Pneumatics Safety Resource.

Learn more: Compression fitting

Frequently Asked Questions

Q: What tube materials are compatible with these double-ferrule compression fittings?

A: These stainless steel compression tube fittings are designed to connect stainless steel, copper, and rigid or semi-rigid plastic tubing. The double-ferrule design ensures a secure grip and tight seal across all compatible tube materials.

Q: What is the maximum working pressure these fittings can handle?

A: These double-ferrule compression fittings are rated for a nominal working pressure of 16 MPa to 20 MPa, making them suitable for high-pressure hydraulic, pneumatic, and instrumentation applications.

Q: Can these fittings be used in high-temperature or cryogenic environments?

A: Yes. The 304 stainless steel construction supports a wide operating temperature range of -100°F to +660°F, making these fittings appropriate for both extremely cold and high-heat applications.

Q: How do I select the correct size for my tubing?

A: Simply match the fitting diameter to your tube's outer diameter. Available sizes are Φ3mm, Φ4mm, Φ6mm, Φ8mm, Φ10mm, and Φ12mm — each fitting connects two tubes of the same diameter end-to-end as a straight coupler.