FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Prepare for the FAA AMT Airframe Exam with our comprehensive quiz. This resource offers multiple-choice questions designed to enhance your knowledge and understanding of aviation maintenance concepts.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which seals are used with vegetable base hydraulic fluids?

Buna-N
Silicone
Natural rubber
Polyurethane

The correct answer is: Natural rubber

Natural rubber is the correct answer because it is the only option that is compatible with vegetable base hydraulic fluids. Buna-N and polyurethane are both synthetic materials and may not be suitable for use with vegetable base fluids. Silicone, while compatible with some types of hydraulic fluids, is not recommended for use with vegetable base fluids due to potential swelling and degradation.