Rubber seals are key fundamental components that prevent the leakage of liquids, gases, or solid particles from the joints of mechanical equipment, while also keeping out external dust and moisture. They utilize the elasticity of rubber to deform under pressure and fill gaps, and are widely used in industries such as automobiles, aerospace, petrochemicals, mechanical manufacturing, electronics, and medical devices.
Core Uses and Functions:
- Sealing: Prevents the leakage of working media (such as engine oil, water, fuel, and refrigerants), or the entry of external impurities into the interior, ensuring the normal operation of equipment.
- Joint Protection: Acts as a seal and buffer between two solid planes (such as pipe flanges), preventing the penetration of gases or liquids through gaps.
- Static and Dynamic Seals:
- Static: Between stationary components, such as gaskets on flanges, covers, and casings.
- Dynamic: Between reciprocating or rotating components, such as oil seals, shaft seals, and hydraulic cylinder piston seals.
- Damping and Vibration Absorption: Due to their high elasticity, they can be used as rubber shock absorbers for vibration reduction and noise suppression in mechanical equipment.
Specific Application Examples:
- Automotive Industry: Brake systems, engine oil seals, fuel systems, and sealing strips.
- Machinery and Plumbing: O-rings, Y-rings, V-rings, etc., used in hydraulic and pneumatic components.
- Chemical and Petroleum: Special rubber types that are resistant to high temperatures and chemical media for sealing pipelines and reactors.
- Medical and Food: Made from specific environmentally friendly, low-VOC materials for food processing machinery, medical equipment, and medical nebulizers.
Common rubber seal materials include natural rubber, nitrile rubber (NBR), silicone rubber (Silicone), fluorine rubber (Viton/FKM), and ethylene propylene diene monomer rubber (EPDM), among others, each adapted to different temperature and chemical environments.