NCCER Millwright Practice Exam

Question: 1 / 400

What is primarily the purpose of using a positive-contact seal?

Prevent heat transfer

Enhance structural stability

Minimize fluid leakage

The primary purpose of using a positive-contact seal is to effectively minimize fluid leakage. These seals create a tight and reliable barrier between components to ensure that fluids, whether they are liquids or gases, do not escape from their intended paths. This is particularly crucial in applications such as hydraulic systems, where pressure and fluid integrity are vital for proper operation and safety. A well-functioning positive-contact seal can help maintain system performance, prevent environmental contamination, and reduce maintenance costs associated with leaks.

In contrast, while preventing heat transfer, enhancing structural stability, and limiting wear and tear are important considerations in various engineering designs, they are not the main function of a positive-contact seal. Their purpose is more focused on fluid containment and ensuring that mechanical systems operate efficiently without the risk of losing critical fluids.

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Limit wear and tear

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