Metal Ferrules

Our metal ferrules are engineered from high-temperature alloys to deliver exceptional mechanical strength, thermal stability, and long-term durability in demanding industrial environments. Designed to withstand severe thermal cycling, vibration, and corrosive conditions, they provide a reliable, robust solution where traditional ferrules often fail.

Metal Ferrules

Boiler tube failures most often occur at the inlet, weld, or tubesheet area. In lower-temperature units (below 1,650°F), metal ferrules provide a simple and cost-effective method of protecting these critical regions. Used as metal tube inserts, they are installed at the tube inlet and often flared to match the tube ID, helping shield the tube end from corrosion and erosion while guiding process flow smoothly into the tube and transferring heat past the tubesheet.

Metal ferrules perform well in moderate-temperature, mildly abrasive environments. Their OD can be wrapped with ceramic fiber for insulation and to avoid metal-to-metal contact. Custom options include tapered inlets/outlets, flanges, slots, holes, and stop pins, and they can be paired with a ceramic head for added tubesheet protection at higher temperatures.

Material Options:

• Low carbon steel 
• 300 series stainless steels 
• Hastelloy®
• Inconel® Alloys

Benefits:

• Protects tube ends from corrosion and erosion
• Minimizes stress corrosion cracking and pitting
• Preserves tube-to-sheet joints
• Easy and economical to replace
• In applications that exceed 2,300°F or the limitations of metals, an all-ceramic design, such as the Blasch ProLok is recommended.

APPLICATIONS

• Thermal Oxidizers
• Catalyst Cooler
• Hydrogen Reformers
• Condensers
• Falling Film 
• Heat Exchangers
• Nitric Acid
• High Temp – Inconel
• Ammonia Combustion Boilers
• ATR - Auto Thermal Reformer
• Syngas Cooler

Product Information Sheets