What is an Oil Seal Specification Chart?
2 Answers
An oil seal specification chart refers to specialized sealing components for general mechanical oil cylinders: USH, UPH, USI, UPI, ODI, IDI, OSI, ISI, SPG, LBH, LBI. Below is a partial introduction about SL fully synthetic engine oil: Advantages of fully synthetic engine oil: Fully synthetic engine oil uses higher-grade base oils compared to semi-synthetic engine oil. Differences in replacement intervals: Semi-synthetic engine oil requires replacement every six months or 7,500 kilometers during use, while fully synthetic engine oil requires replacement once a year or every 10,000 kilometers. Fully synthetic engine oil has a broader operating temperature range. Under the same working conditions, fully synthetic oil can protect the engine with lower viscosity, whereas semi-synthetic engine oil demands relatively higher performance requirements. Replacement interval: SL fully synthetic engine oil should be replaced once a year or every 10,000 kilometers during use.
As someone who frequently deals with car repairs, the oil seal specification sheet is extremely important to me, as it details various technical parameters of oil seals. An oil seal is that small component—a sealing ring that prevents oil leaks in the engine or transmission. The specification sheet typically includes inner diameter, outer diameter, thickness, and material type, such as the temperature resistance range and pressure rating for rubber or metal materials. When replacing an oil seal, I always refer to this sheet because it ensures the new part is compatible with the original vehicle—choosing the wrong size or material can easily lead to oil leaks, component damage, or even more severe mechanical failures. Usually, I obtain the specification sheet from the vehicle repair manual, manufacturer's website, or a professional parts store, then download and print it for backup. When inspecting an old oil seal, I compare its dimensions against the specification sheet to save time. A related tip is that temperature and chemical compatibility are often overlooked—for example, rubber can deform in high-temperature environments, so those parameters in the specification sheet are a huge help to me.
