DIN7603A Annealed Copper Sealing Washer
DIN7603A annealed copper sealing washer is a high-performance sealing component designed for reliable leak prevention in hydraulic, pneumatic, automotive, and industrial fluid systems. The DIN7603A annealed copper sealing washer is manufactured from pure copper with an annealing process that improves softness, ductility, and sealing adaptability.
The DIN7603A annealed copper sealing washer provides excellent conformability, allowing it to create a tight seal between bolts, plugs, fittings, and mating surfaces. It is widely used in hydraulic systems, fuel systems, brake systems, engines, compressors, pumps, and industrial equipment where dependable sealing performance is required.
Product Overview
The DIN7603A annealed copper sealing washer is designed for static sealing applications where a soft metal washer is required to fill surface irregularities and prevent fluid leakage. The annealing treatment reduces material hardness and increases flexibility, allowing the washer to deform slightly during tightening.
Compared with standard hard copper washers, the DIN7603A annealed copper sealing washer provides improved sealing performance and better contact with sealing surfaces. Its excellent thermal conductivity and corrosion resistance make it suitable for applications involving oils, fuels, hydraulic fluids, and temperature variations.
This copper sealing washer is commonly selected by OEM manufacturers, machinery suppliers, automotive repair industries, and hydraulic equipment manufacturers.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN7603A |
| Product Name | Annealed Copper Sealing Washer |
| Material | Pure Copper |
| Washer Type | Copper Flat Sealing Washer |
| Shape | Round Flat Washer |
| Manufacturing Condition | Annealed Copper |
| Size Range | According to DIN7603A Standard |
| Inner Diameter | According to DIN7603A Standard |
| Outer Diameter | According to DIN7603A Standard |
| Thickness | According to DIN7603A Standard |
| Surface Finish | Natural Copper Finish |
| Application Type | Static Sealing Connection |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Size, material, packaging available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material Grade | Pure Copper |
| Tensile Strength | According to copper condition |
| Hardness | Softened by annealing treatment |
| Ductility | Excellent |
| Thermal Conductivity | Excellent |
| Corrosion Resistance | Good |
| Sealing Performance | Excellent for static applications |
| Manufacturing Standard | DIN7603A |
Materials and Manufacturing Process
The DIN7603A annealed copper sealing washer is manufactured through precision metal forming and annealing processes to achieve stable sealing performance.
- Raw material selection: High-quality pure copper sheet or strip
- Stamping process: Precision punching of washer shape
- Dimension forming: Accurate control of inner diameter, outer diameter, and thickness
- Annealing treatment: Softens copper and improves ductility
- Surface cleaning: Removes processing residues
- Inspection: Dimensional accuracy, material condition, and surface quality testing
- Packaging: Protective packaging to prevent deformation and contamination
Each DIN7603A annealed copper sealing washer is produced under strict quality control to ensure reliable sealing performance.
Applications of the Product
The DIN7603A annealed copper sealing washer is widely used in industries requiring dependable metal sealing:
- Automotive industry: Oil drain plugs, fuel systems, brake components
- Hydraulic equipment: Hydraulic fittings and pressure connections
- Pneumatic systems: Air line connections
- Machinery manufacturing: Pumps, valves, and equipment assemblies
- Marine equipment: Fluid system connections
- Construction machinery: Hydraulic components
- Industrial equipment: Lubrication systems
- Manufacturing systems: Precision sealing applications
Its soft copper structure provides reliable sealing where rigid metal washers cannot achieve sufficient contact.
Why Choose This Product
- Pure copper material with excellent ductility
- Annealed treatment improves sealing ability
- Excellent thermal conductivity
- Reliable leak prevention performance
- Suitable for oil, fuel, and hydraulic applications
- Good corrosion resistance
- Stable dimensional accuracy
- OEM customization support
The DIN7603A annealed copper sealing washer provides a dependable sealing solution for critical fluid connection systems.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Experience with precision washer manufacturing
- Support for copper and special material components
- Advanced stamping and forming capability
- OEM/ODM customization support
- Stable production capacity for bulk supply
- Strict quality inspection procedures
- Global export experience
- Engineering support for customized sealing requirements
Flybear provides reliable sealing and fastening products for automotive, hydraulic, machinery, and industrial customers worldwide.
Quality Inspection and Control
Quality assurance is maintained throughout production:
- Copper material composition analysis
- Raw material certificate verification
- Inner and outer diameter inspection
- Thickness measurement
- Annealing condition verification
- Surface quality inspection
- Dimensional tolerance inspection
- Packaging quality inspection
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting a DIN7603A annealed copper sealing washer, consider:
- Bolt, plug, or fitting size
- Required sealing pressure
- Working temperature range
- Fluid type compatibility
- Contact surface condition
- Replacement requirements after installation
Correct selection helps achieve reliable sealing performance and prevents leakage during operation.
FAQ
1. What is DIN7603A annealed copper sealing washer used for?
It is used to seal threaded connections and prevent leakage in hydraulic, automotive, and industrial systems.
2. Why is copper washer annealed?
Annealing softens copper, improves ductility, and allows better sealing deformation during tightening.
3. What is the difference between DIN7603A and DIN7603B?
DIN7603A generally refers to copper sealing washers with a flat ring design, while DIN7603B refers to different material or design variations.
4. Can DIN7603A copper washers be customized?
Yes, Flybear supports customized dimensions, materials, and packaging requirements.
5. Can copper sealing washers be reused?
Copper sealing washers are generally recommended for replacement after use to ensure reliable sealing performance.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.
