FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

What may be used as a lubricant on oxygen system tapered pipe thread connections?

Petroleum Jelly

Graphite Grease

Silicone Lubricant

Teflon Tape

Teflon tape is the only option listed that is suitable for use as a lubricant on oxygen system tapered pipe thread connections. Petroleum jelly and graphite grease could potentially contaminate the oxygen system and pose a safety hazard. Silicone lubricant may react with certain materials in the oxygen system, causing damage. Teflon tape is the only option that is specifically designed for use on tapered pipe thread connections and will not cause any harm to the oxygen system.

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