Assertion: compressor | /r/HasProperty | sealed unit
Facets:
Source sentences:
text: The second is the fact that the compressors are sealed units containing several types of metals requiring a separate billing system to that applied to single metal scrap material.
text: As the compressors are sealed units and will often still contain traces of refrigerant gas and lubricating oil, they are generally stored in batches separately from other scrap metal.