NAI-LOK 12mm Instrumentation Tube Fitting Alloy 276 Double Ferrule 4-Way Union Cross High Pressure Compression Fitting
The NAI-LOK 12mm Alloy 276 Double Ferrule Compression Tube Fitting, 4-Way Union Cross is engineered for high-pressure instrumentation systems in corrosive and harsh environments. Designed to operate at 6000 Psig, it provides leak-tight and reliable connections for tubing systems used in chemical processing, offshore, oil & gas, and laboratory applications.
Featuring double ferrule technology, this fitting ensures excellent grip, vibration resistance, and secure sealing. Manufactured from Hastelloy C-276, it offers outstanding resistance to oxidizing and reducing agents, acids, and chloride-containing environments.
Instrument Types Stainless Steel fittings
Product Description:
1.Press up to 6000psig for standard stainless steel body
2.Temperature for PTFE packing from -65°F to 450°F (-54°C to 232°C)
Temperature for Grafoil packing from -65°F to 1200°F (-54°C to 649°C)
3.Packing below stem thread isolates the thread lubricant from the media
4.Back seating design protects the packing in fully open position
5.Non-rotating stem tip
6.100% factory tested
| Item |
Specification |
| Product Name |
4-Way Union Cross Tube Fitting |
| Brand |
NAI-LOK |
| Material |
Hastelloy C-276 (UNS N10276) |
| Type |
Double Ferrule Compression Tube Fitting |
| Tube Size |
12 mm OD |
| Connection |
4-Way Union Cross |
| Working Pressure |
Up to 6000 Psig (414 bar) |
| Temperature Range |
-196°C to +400°C |
| Manufacturing Standard |
Equivalent to ASTM / ASME / DIN |
| Surface Finish |
Bright, Smooth, Anti-corrosion |
| Hardness |
≤ 90 HRB |
| Tensile Strength |
≥ 690 MPa |
| Yield Strength |
≥ 283 MPa |
| Elongation |
≥ 40% |
| Corrosion Resistance |
Excellent resistance to acids, chlorides, oxidizing & reducing agents |
| Applications |
Instrumentation, Chemical Process, Oil & Gas, Marine, Laboratory Systems |
Audited Supplier 
){kind=link}