Metal Gasket Face Seal Fittings
316L Metal Gasket Face Seal Butt Weld Gland
316L stainless steel metal gasket face seal gland with a tube butt weld connection for high-purity gas, vacuum and critical fluid systems. The metal gasket face seal provides a compact, all-metal sealing interface for semiconductor, analytical and industrial gas applications.
Specifications
- Product Type
- Metal Gasket Face Seal Gland
- Standard Material
- 316L Stainless Steel
- Seal Type
- Metal Gasket Face Seal
- End Connection
- Tube Butt Weld
- Configuration
- Short & Long Gland Options
- Face Seal Sizes
- 1/8 to 1 in., depending on configuration
- Tube Sizes
- Fractional & Metric Options
- Gasket Materials
- Stainless Steel, Nickel & Copper Options
- Working Pressure
- Size-, material- and configuration-dependent
- Service
- High-Purity Gas, Vacuum & Critical Fluid Systems
316L Metal Gasket Face Seal Butt Weld Gland
The 316L Metal Gasket Face Seal Butt Weld Gland provides a compact connection between welded tubing and a metal gasket face seal joint.
The sealing interface uses a replaceable metal gasket compressed between two mating glands. Tightening the male and female nuts loads the glands against the gasket to form the face seal, while the opposite end of the gland is butt welded directly to the process tubing.
This connection principle is widely used where clean flow paths, low leakage and reliable demountable connections are important.
Key Features
- 316L stainless steel construction
- Metal gasket face seal design
- Tube butt weld connection
- Short and long gland configurations
- Fractional and metric tube options
- Replaceable metal gasket
- All-metal primary sealing interface
- Compact connection for welded tubing systems
- Suitable for high-purity gas, vacuum and critical fluid applications
- Individual gland components and complete connection requirements can be specified
Connection Principle
A typical metal gasket face seal connection consists of:
- Female Nut
- Gland
- Metal Gasket
- Gland
- Male Nut
As the male and female nuts are tightened, the opposing gland sealing surfaces compress the metal gasket to create the face seal.
The gasket is the replaceable sealing element of the connection. Correct gland, gasket and nut selection is therefore important when specifying a complete assembly or replacement component.
Gland Configurations
Short Butt Weld Gland
Short glands provide a compact transition between the face seal interface and welded process tubing where installation space is limited.
Long Butt Weld Gland
Long glands provide additional tube length between the sealing interface and weld area, which can be useful for orbital welding, fabrication and equipment installation requirements.
Exact gland length and tube dimensions depend on face seal size and configuration.
Size Range
Metal gasket face seal glands are available in multiple nominal connection sizes.
Parameter | Available Range |
|---|---|
Face Seal Size | 1/8 to 1 in., depending on configuration |
Tube Connection | Fractional & Metric |
Connection Type | Tube Butt Weld |
Gland Style | Short & Long |
Exact face-seal-to-tube size combinations should be confirmed for the required configuration.
Material Options
316L Stainless Steel is the standard material for this product page.
Additional high-purity material grades may be available for specific project requirements and should be confirmed against the required material specification and documentation before ordering.
Metal Gasket Options
Metal gasket material should be selected according to process medium, temperature, system requirements and mating-component compatibility.
Common metal gasket options include:
- Stainless steel
- Nickel
- Copper
Gland and gasket materials should be selected as part of the complete face seal connection rather than independently.
Pressure Considerations
Working pressure depends on face seal size, gland configuration, tube dimensions, material, gasket selection, temperature and service conditions.
The allowable working pressure should therefore be confirmed for the exact component configuration rather than applying a single pressure rating across all metal gasket face seal sizes.
The pressure capability of the welded tubing and other system components must also be considered when determining the allowable pressure of the complete assembly.
Surface Finish, Cleaning & High-Purity Requirements
High-purity and ultra-high-purity systems may require controlled wetted-surface finish, cleaning, packaging, material processing and inspection documentation.
Where these requirements apply, specify the required:
- Material grade
- Wetted-surface finish
- Cleaning level
- Packaging requirement
- Welding requirement
- Inspection or test documentation
These requirements should be confirmed for the specific project before ordering.
Typical Applications
- Semiconductor gas delivery systems
- High-purity process gas systems
- Vacuum systems
- Gas distribution panels
- Laboratory gas systems
- Specialty gas equipment
- Critical fluid handling systems
Selection & Ordering Information
To specify the required 316L Metal Gasket Face Seal Butt Weld Gland, provide:
- Face seal size
- Tube OD
- Tube wall thickness, when applicable
- Fractional or metric tube system
- Short or long gland configuration
- Material grade
- Gasket material
- Operating pressure and temperature
- Process medium
- Surface finish requirement, when specified
- Cleaning and packaging requirement, when specified
- Required documentation, when applicable
- Required quantity
- Existing part number or drawing, when available
For replacement or equivalent requirements, provide the existing part number, drawing, dimensions or mating-component information for configuration review.
