Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of rubber and metal bonded seals in China, also supports customized service. Please feel free to buy high quality rubber and metal bonded seals for sale here from our factory.
Products Description

Rubber and metal bonded seals are sealing devices that combine rubber and metal materials and are usually used when high sealing performance is required. This type of seal consists of a metal ring and a rubber ring, and the rubber is embedded in the inner diameter of the metal ring through a bonding process to form a reliable sealing structure.
Benefits of Rubber and Metal Bonded Seals
- Leak-proof: The combination of metal and rubber rings ensures a tight, secure connection, maintaining system integrity and reducing the risk of costly leaks.
- Durability: The robust construction of bonded seals combines the strength of metal with the flexibility of elastomers, resulting in a highly durable and wear-resistant seal.
- Vibration resistance: The rubber component acts as a damping element, absorbing vibrations and minimizing the risk of loosening or failure due to dynamic movement.
- Customization options: Rubber and metal bonded seals can be customized in size, material, and design to meet specific operating requirements.
- Chemical resistance: Depending on the materials used (e.g., NBR, FKM), bonded seals can be designed to resist a wide range of chemicals and extreme temperatures, making them suitable for a variety of industrial applications.
Applications
Rubber and metal bonded seals are widely used in mechanical, hydraulic, and pneumatic systems, especially in high-pressure, high-temperature, or low-temperature environments, such as hydraulic valves, pipe joints, and seals under bolt heads.
They are also used in high-stress environments such as engines, brake systems, clutches, etc., and are favored for their excellent sealing performance and pressure resistance.
Rubber Materials for Bonded Seals
| NBR | Hardness: 60-90 Shore A Metal: Stainless steel, Carbon steel, Copper alloy, Aluminum alloy |
| HNBR | Hardness: 70-90 Shore A Metal: Stainless steel, Carbon steel, Copper alloy, Aluminum alloy |
| EPDM | Hardness: 40-90 Shore A Metal: Stainless steel, Carbon steel, Copper alloy, Aluminum alloy |
| FKM | Hardness: 55-90 Shore A Metal: Stainless steel, Carbon steel, Copper alloy |
| VMQ | Hardness: 45-90 Shore A Metal: Stainless steel, Carbon steel, Copper alloy, Aluminum alloy |
Manufacturing Process
1. Materials: Metal gaskets are usually made of carbon steel, stainless steel, or aluminum, while rubber seals are usually made of materials such as nitrile rubber, silicone, or fluororubber.
2. Molding: In the first stage of the manufacturing process, the rubber sealing material is injected and molded into the desired shape. After the rubber is poured into the mold, it is heated and pressurized to ensure uniformity throughout the seal. The cooling process then begins, and the newly molded seal is placed on a conveyor for transportation to the next process.
3. Bonding: Depending on the application requirements, solvent-based or heat-activated adhesives may be used. The rubber seal is then placed on the gasket and a compressive load is applied to press the seal against the gasket, and the adhesive is then cured at a specific pressure.
4. Surface preparation: Before bonding, the metal surface needs to be thoroughly cleaned to remove contaminants that may hinder bonding.
5. Adhesive application: After cleaning the surface, a one-step adhesive coating or a two-step primer and adhesive coating is applied.
6. Testing: After molding, the parts are tested to ensure that the bonding, tensile strength, and other properties meet customer specifications. The bond strength between rubber and adhesive, between primer and adhesive layer, and between adhesive and metal are also tested according to ASTM D429 standards.
about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.

01
R&D Advantages
02
Manufacturing Advantages
03
Product Advantages
Certification
Quality Management and Environmental Management Certification



Contact US
we are here for you
amy@lindepolymer.com
mina@lindepolymer.com
+8613159203761
Hot Tags: rubber and metal bonded seals, China rubber and metal bonded seals manufacturers, suppliers, factory, Metal Rubber Seals, Metal Bellows Seals, Internal Combustion Engine Seals, Metal Bonded Rubber Seals








