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Tube Furnace Flange - Vacuum / Gas Sealing

Tube Furnace Flange - Vacuum / Gas Sealing

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The S4R Tube Furnace Flange - Vacuum / Gas Sealing provides a removable sealing interface for compatible laboratory furnace tubes used in gas-flow or vacuum systems.

Manufactured from 304 stainless steel, the assembly uses silicone sealing rings and mechanical clamping to provide a secure tube-to-flange connection. Standard sizes are available for commonly used quartz furnace tubes, with custom dimensions and connection configurations available on request.

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The S4R Stainless Steel Tube Furnace Flange provides a removable sealing interface for compatible laboratory furnace tubes used with gas-flow or vacuum systems. The assembly combines a 304 stainless steel flange body, silicone sealing rings and mechanical clamping components to seal around the tube while providing an interface for external gas or vacuum connections. Standard sizes are available for commonly used quartz furnace tubes, with custom configurations available for specific laboratory assemblies.

Key Features

✓ 304 stainless steel flange construction
✓ Silicone sealing rings for tube-to-flange sealing
✓ Mechanical clamping and removable assembly
✓ Designed for gas-flow and vacuum furnace connections
✓ Standard tube OD options from 25 to 100 mm
✓ Custom sizes and connection configurations available

Typical Applications

• Laboratory tube furnace assemblies
• Quartz-tube furnace sealing
• Gas-flow thermal processing systems
• Vacuum-assisted furnace experiments
• Inert or process-gas furnace connections
• Research and materials-processing systems
Technical Specifications
Flange Material 304 stainless steel
Product Type Tube furnace sealing flange assembly
Seal Material Silicone sealing rings
Sealing Principle Mechanical flange compression
Standard Compatible Tube OD 25 / 30 / 40 / 50 / 60 / 80 / 100 mm
Standard Tube Application Quartz furnace tubes
Connection Function Gas-line or vacuum-system interface
Custom Configuration Available on request
Standard Compatible Tube Sizes
Ø25 mm Standard
Ø30 mm Standard
Ø40 mm Standard
Ø50 mm Standard
Ø60 mm Standard
Ø80 mm Standard
Ø100 mm Standard
Sealing & Connection Principle
Tube Interface Furnace tube positioned within the flange sealing assembly
Sealing Element Silicone sealing rings
Compression Mechanical tightening of the flange assembly
External Connection Configuration-dependent gas or vacuum connection
Technical Notes
• Select the flange according to the actual outside diameter of the furnace tube.
• Sealing rings and tube contact surfaces should be clean and correctly positioned before assembly.
• Tighten the flange assembly progressively and evenly to reduce localized mechanical loading on the furnace tube.
• Vacuum performance depends on the complete installation, including the furnace tube, seals, flange assembly, external connections and vacuum equipment.
• No specific vacuum level, maximum pressure or sealing temperature is specified unless stated for a defined configuration.
• Compatibility with alumina, mullite or other ceramic furnace tubes should be confirmed before ordering.
Supply
Standard & Custom Configurations Available
Supply configuration depends on the selected tube diameter and connection arrangement
Selection & Custom Configuration
Standard configurations are available for quartz furnace tubes with outside diameters of 25, 30, 40, 50, 60, 80 and 100 mm. For non-standard tube diameters or specific connection arrangements, please provide the tube outside diameter, required connection configuration and quantity. Compatibility with other furnace-tube materials should be confirmed before ordering.

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