Cast Iron Backing Flanges

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Cast Iron Backing Flanges

Cast Iron Backing Flanges are essential structural components in glassware coupling systems, providing mechanical support, alignment, and sealing integrity for glass-to-glass or glass-to-bellow connections.

These robust flanges are typically used with PTFE inserts or split-ring gaskets to create a reliable, leak-proof seal while maintaining rigid alignment under thermal expansion, vibration, or mild pressure conditions.

• High-strength cast iron construction
  
• Ensures structural stability and proper alignment
  
• Critical for modular glass pipelines and process units
  
• Supports vacuum and mild pressure applications

Backing Flanges Overview

• Backing flanges are passive but critical structural elements. They:
• Join a glass end to another glass component or PTFE bellow
• Provide mechanical rigidity and alignment
• Ensure stable operation under thermal or mechanical stresses
• Enable modular assembly and maintenance

These flanges are typically hidden in the system, yet their role in ensuring alignment and integrity is vital.

Key Technical Parameters – Cast Iron Backing Flanges

• Material: High-strength cast iron for durability and rigidity
• Compatibility: Designed to mate with split-ring inserts and standard flange geometries
• Flange Pattern: Optional pre-drilled or custom bolt patterns (e.g., Table E, Table F, ASA 150)
• Mechanical Strength: Can withstand axial and bending loads transferred through the coupling
• Dimensional Options: Available in multiple DN sizes, bolt circle diameters (PCD), bolt holes, and thicknesses
• Insert Use: Always paired with split-ring inserts or compatible gaskets for a reliable seal
• Customization: Undrilled or pre-drilled flanges to match customer mating components

Applications of Cast Iron Backing Flanges

• Laboratory & pilot plant glass piping networks
  
• Glass reactors and vessels requiring secure glass-to-glass connections
  
• PTFE bellows installations between glass sections
  
• Modular reconfigurations in chemical, pharmaceutical, or academic setups
  
• Repair or retrofitting of existing glass installations

These flanges are widely used wherever robust mechanical support is required, especially under vacuum or mild pressure conditions.

Industries We Serve

• Chemical & Pharmaceutical Plants
  
• Laboratories & R&D Facilities
  
• Pilot Plants & Modular Glass Systems
  
• Process Equipment Manufacturing
  
• Academic & Industrial Glass Installations

Why Choose Our Cast Iron Backing Flanges?

• High-strength cast iron for durability and rigidity
  
• Ensures proper alignment and mechanical stability
  
• Supports modular glass assemblies
  
• Reliable sealing with compatible inserts
  
• Customizable for size, bolt pattern, and system requirements
  
• OEM and bulk supply available

Order Cast Iron Backing Flanges Today!

• In Stock – Limited Availability!
  
• Bulk Discounts Available – Save More on Large Orders!
  
• Customizable & Scalable Designs
  
• Ships Worldwide – Fast & Reliable Delivery!

Contact us today for high-quality cast iron backing flanges for your glass or process systems!