Aircraft Assembler how-to

How to Apply Aerospace Sealant

Sealant prevents leaks and corrosion.

Updated By the Career Education Institute Curriculum Team
Quick answer

Sealant prevents leaks and corrosion. In short: check; clean; mix, then complete the remaining steps below.

Step by step

  1. Check sealant type and life.

  2. Clean surfaces.

  3. Mix correctly.

  4. Apply a smooth bead.

  5. Tool the bead.

  6. Cure as specified.

Safety reminders for aircraft assemblers

  • Wear eye and hearing protection
  • Prevent FOD
  • Use ergonomics for repetitive tasks
  • Handle chemicals safely

Rivet · Bucking bar · Countersink · Fastener · Grip length · Sealant: see the full aircraft assembler glossary.

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