Assertion: asbestos | /r/ObjectUse | used as an air leak sealant
Facets:
value: on the exterior of hvac ducts
type: LOCATION
value: in the duct interiors
type: LOCATION
Source sentences:
text: And indeed in the U.S. the Illinois DEC indicates that asbestos was used as both an insulation and an air leak sealant both on the exterior of HVAC ducts and in the duct interiors.