Full definition
In the industrial and automotive sectors, the terms 'reten' (commonly used in Mexico and Colombia) and 'sello' (used in Chile and Peru) refer to the same essential component: the oil seal. These seals are critical for retaining lubrication within machinery and preventing contaminants from entering rotating shaft assemblies. The oil seal is typically a radial lip seal, designed to operate under various conditions, ensuring the longevity of mechanical systems. The technical specifications are standardized under ISO 6194 and DIN 3760, which outline the dimensions and materials needed for effective performance. The elastomer lip is usually made from Nitrile Butadiene Rubber (NBR), with Fluoroelastomer (FKM) used in high-temperature applications, ensuring flexibility and durability against oil and grease.
The fundamental structure of an oil seal comprises a metal case, which houses a flexible lip that makes contact with the rotating shaft. This design is complemented by a garter spring that maintains the lip's contact pressure, preventing leaks. The seals are designated using measurements that represent the shaft diameter, bore diameter, and width (e.g., TC 40×62×8), where 'TC' indicates the type of seal based on the number of lips and configuration. This standardized designation is crucial for procurement and replacement to ensure compatibility across various applications and brands.
In practice, the choice between 'reten' and 'sello' may affect procurement strategies, especially for businesses operating across different LATAM countries. It is advisable to include both terms in product listings to maximize visibility and accessibility. Major brands like NOK, Freudenberg/Simrit, SKF, Parker, and Trelleborg offer oil seals that conform to these specifications, ensuring that maintenance engineers can source reliable components tailored to their needs. The understanding of regional terminology can streamline communication in diverse markets, making it essential for suppliers and buyers alike.