Conservation Pros - A common sight in older homes- Metal ductwork "sealed" with asbestos tape. The duct is disconnected and leaking air. This is inefficient and can cause asbestos fibers to get
![do i assume this is asbestos tape? can i just use mastic to seal around it and leave it alone? : r/hvacadvice do i assume this is asbestos tape? can i just use mastic to seal around it and leave it alone? : r/hvacadvice](https://preview.redd.it/do-i-assume-this-is-asbestos-tape-can-i-just-use-mastic-to-v0-52ko06uu05da1.jpg?width=640&crop=smart&auto=webp&s=43caca662ab84f0e318b91d8171f320313c74957)
do i assume this is asbestos tape? can i just use mastic to seal around it and leave it alone? : r/hvacadvice
Airgas - H29BT47-2 - Harris Industries 3" X 200' Black/Red/White 4 mil Polyethylene BT Series Barricade Tape "Danger Asbestos"
![Asbestos Duct Tape Containing Asbestos (HVAC Systems, Venting, etc) – Canadian HAZ-MAT Environmental Asbestos Duct Tape Containing Asbestos (HVAC Systems, Venting, etc) – Canadian HAZ-MAT Environmental](https://www.haz-mat.ca/wp-content/uploads/2016/02/asbestos-vents-hvac-paper-300x227.jpg)