A professional who seals and encapsulates magnetic, electrical, electronic, and mechanical components of aircraft and missile parts and assemblies in plastic and other sealant materials, using handtools, power tools, and equipment. Respnsibilities include:

• Mixes specified amounts of resins, curing agents, and fillers in container, according to formula, using spatula.
• Cleans parts to be sealed and encapsulated, using solvents, brush, and rags.
• Positions component parts in molds and pours or injects sealing compound into molds.
• Places molds in preset oven for specified time to harden mixture around units.
• Smooths and finishes surfaces of hardened sealing compound, using scratch remover, files, sander, and other work aids.
• May apply protective coating to component parts by spraying or dipping parts in resin vat.
• May engrave identifying symbols, letters, and numbers on unit encasement, using pantograph engraving machine.
• May inspect components prior to sealing and encapsulating, using preset measuring devices.
• May operate curing equipment.
• May build temporary molds from metal, putty, plastic, and other materials.