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Rubber sealing grommets

A rubber sealing grommet is a seal made of rubber material that is commonly used to provide a static or dynamic seal. Rubber sealing grommets are usually made of rubber materials, such as nitrile butadiene rubber (NBR), ethylene propylene rubber (EPDM), silicone, etc. Rubber sealing grommets are generally ring-shaped, with cross-sectional shapes such as circular, square, and V-shaped. They are simple in structure and usually consist of a rubber seal, sometimes combined with a support of metal or other materials. The main function of the rubber sealing grommet is to provide a sealing effect and prevent the leakage of liquid or gas. They can be used for static sealing, such as filling gaps, pipe connections, valve seals, etc.; they can also be used for dynamic sealing, such as piston rod seals, shaft seals, etc. Rubber sealing grommets are widely used in the automotive industry, machinery and equipment, electronic products, aerospace and other fields. They are used for sealing pipes, valves, pistons, shafts and other components to ensure reliable operation of the system under various working conditions.

rubber expansion bellows

Rubber expansion bellows

Product name : Rubber expansion bellows

Product material : Rubber/ Silicone/ Custon

Hardness (Shore A) : 20 to 90

Applicable temperature °C : -60 to 300

Certification : ISO: 9001, ISO: 14001, IATF: 16949

Rear Coil Spring Insulators

rear coil spring insulators

Rear coil spring insulators are rubber components used in automobiles to protect the suspension system and body structure from vibration and noise. Because of their exceptional elasticity and durability—which come from being composed of EPDM—they may bounce back from stress. In addition to serving as buffers, these insulators lessen the force of impact when driving, which lowers the possibility of vibration and impact damage. They also contribute to longer suspension system lifespans, increased suspension system stability, and decreased transfer of noise. The quality of these items is guaranteed by certification standards such as ISO 9001, ISO/TS 16949, SAE J200, and ASTM D2000. Quality testing is essential to make sure rear suspension coil spring isolation pads match OEM criteria, which might differ.

A rubber grommet is an annular seal made of rubber material used to provide sealing properties at joints or seams. It is usually made of rubber materials (such as NBR, EPDM, silicone, etc.) and has good elasticity and durability.

Structure

Rubber sealing grommets are usually ring-shaped and constructed of soft rubber material. Its inner and outer diameters are adapted to the dimensional requirements of the connection points or seams.

Elements of structure

  • Cross-sectional shape: The cross-sectional shape of the rubber sealing grommet determines its sealing performance and scope of application. Common cross-sectional shapes include round, square, V-shaped, U-shaped, X-shaped, etc. Different shape designs enable rubber sealing grommets to adapt to different sealing needs and application scenarios.
  • Material selection: Rubber sealing grommets are usually made of rubber materials, such as NBR (nitrile butadiene rubber), EPDM (ethylene propylene rubber), silicone, etc. The selection of materials depends on the requirements of the application environment, such as oil resistance, high temperature resistance, chemical corrosion resistance, etc. Rubber materials have good elasticity and sealing properties and can adapt to different working conditions.
  • Elastic properties: The elastic properties of rubber sealing grommets are key to their sealing performance. They have a certain compression deformation ability and can adapt to different sizes and shapes during installation to achieve a reliable sealing effect. The elastic properties of rubber sealing grommets also resist the effects of external factors such as vibration, shock and temperature changes.
  • Dimensions and Dimensional Tolerances: Dimensions and dimensional tolerances of rubber sealing grommets are important factors in ensuring that they match the connecting components and install a seal. Appropriate size and tolerance design can ensure that the sealing grommets fit tightly with the connecting parts during installation to achieve an effective sealing effect.
  • Surface treatment: In order to improve the sealing performance and durability of rubber sealing grommets, special treatments are often performed on their surfaces. This may include the application of special lubricants, treatments to increase wear resistance, or anti-corrosion treatments. Surface treatments improve sealing grommet life and performance.

Materials

Rubber sealing grommets can be made from different types of rubber materials to meet different application needs. Common materials include NBR (nitrile butadiene rubber), EPDM (ethylene propylene rubber), silicone, etc. Each material has different properties, such as oil resistance, high temperature resistance, weather resistance, etc., and can be selected according to specific needs.

Application

Rubber sealing grommets are widely used in various industries and fields, including automobiles, aerospace, machinery and equipment, electronic products, etc. They are used to seal connection points to prevent leakage or infiltration of liquids, gases or dust, ensuring the normal operation of the system.

Automotive Industry

Rubber sealing grommets play an important role in the automotive industry. They are used for sealing of engine systems, such as cylinder head seals, crankshaft seals, piston seals, etc. At the same time, rubber sealing grommets are also used to seal various pipeline connection points such as automobile hydraulic systems, braking systems, air conditioning systems, etc.

Mechanical equipment

In the field of mechanical equipment, rubber sealing grommets are widely used in sealing various rotating shafts and connection points. They can be used in pumps, valves, transmissions, hydraulic cylinders and other equipment. The sealing properties of the rubber sealing grommets prevent liquid or gas leakage and protect the equipment from the external environment.

Aerospace industry

In the aerospace industry, the application of rubber sealing grommets is very important. They are used for sealing of aerospace engines, such as turbine seals, gas turbine seals, etc. Rubber sealing grommets are also used in key locations such as door sealing and connection point sealing of aerospace vehicles to ensure the safety and normal operation of aerospace vehicles.

Electronics

Rubber sealing grommets also play an important role in the manufacturing of electronics. They are used to seal mobile phones, tablets, cameras and other devices to prevent the entry of dust and moisture and protect the normal operation of internal electronic components. Rubber sealing grommets are also used in battery sealing, interface connections and other applications.

Medical equipment

In the field of medical equipment, rubber sealing grommets are widely used in the sealing and connection of medical equipment. For example, they are used for sealing surgical instruments, sealing medical syringes, etc. Rubber sealing grommets have good chemical resistance and biocompatibility, and can meet the special requirements of medical equipment.

Installation method

Rubber sealing grommets can be installed directly at the connection point, usually by slipping it over the outside edge of the connection point or seam. Its elasticity provides a tight seal, ensuring the reliability and tightness of the connection point.

Category

  1. O-ring: O-ring is the most common and widely used type of rubber sealing grommet. It is annular in shape with a circular cross-section and has good sealing performance. O-rings are widely used in various static and dynamic sealing applications, such as pipe connections, valves, pistons, etc.
  2. X-ring: An X-ring is a rubber sealing grommet with a cross-section shape. It is commonly used in high-pressure sealing applications and can provide better sealing performance and compression resistance. X-type sealing rings are commonly used in high-pressure sealing fields such as hydraulic systems and pneumatic systems.
  3. V-shaped sealing ring: V-shaped sealing ring is a rubber sealing grommet with a V-shaped cross-section. It is designed to provide good sealing properties and resistance to compression when compressed. V-shaped sealing rings are commonly used in sealing applications with rotating or reciprocating motions such as shaft seals and piston seals.
  4. U-shaped sealing ring: A U-shaped sealing ring is a rubber sealing grommet with a U-shaped cross-section. It is often used to seal the connection points of liquids or gases in pipes or containers. U-shaped sealing rings are widely used in pipeline systems, storage tanks, valves and other fields.
  5. Other special-shaped sealing rings: In addition to the common types mentioned above, there are also some special-shaped rubber sealing grommets, such as square sealing rings, Y-shaped sealing rings, etc. They have special functions and advantages in specific application scenarios.

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