Stainless Steel Tube Nut – 3/8" Tube OD | Compression Nut for Instrumentation Fittings

The SN-6 is a 3/8" stainless steel tube nut made for compression fittings and instrumentation systems that need solid, leak-tight connections. Machined from 316 stainless, it holds up in high-pressure and sanitary environments where durability and sealing matter.

It’s a key part of compression assemblies—used with ferrules, elbows, tees, and valve bodies in systems that see frequent cleaning, vibration, or pressure changes. You’ll find it in lab builds, process skids, gas systems, and Clean-in-Place (CIP) tubing layouts.

The SN-6 fits right into Swagelok® style setups and delivers reliable, no-nonsense performance in applications where failure isn’t an option.

Key Benefits

• Seal: Delivers strong, repeatable compression for leak-free service
• Durability: Resists corrosion, vibration, and high-cycle use
• Compatibility: Works with 3/8" stainless tubing and standard compression parts
• Material: 316 stainless steel for cleanroom, sanitary, and industrial systems
• Simplicity: Drop-in replacement for most Swagelok® style compression nuts

Typical Applications

• Sanitary fluid systems
• Pressure instrumentation assemblies
• Gas distribution setups
• Clean-in-Place (CIP) tubing lines
• OEM process skids and lab hardware

Looking for a 3/8" compression nut that holds under pressure? The SN-6 gives you a solid seal and reliable performance in sanitary and industrial builds.