Intro to Millwright 2025 – 400 Free Practice Questions to Pass the Exam

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What type of sealing material would NOT typically be used for high-temperature applications?

Metal

Cork

Cork is not typically used for high-temperature applications primarily because it has a limited temperature tolerance. While cork can withstand moderate heat, it generally starts to degrade or lose its sealing properties at higher temperatures, which can lead to failure in a sealing application.

In contrast, metal sealing materials are designed to withstand high temperatures and can often be used in extreme environments without losing their integrity. Silicone is effective for high-temperature sealing due to its flexibility and heat resistance. Teflon, or PTFE, is also known for its high temperature resistance and is utilized in various sealing applications where heat can be a factor. This makes cork unsuitable when reliable performance under high thermal conditions is a requirement.

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Silicone

Teflon

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