Is duct seal an approved seal compound to put inside a seal off fitting.? I was told thatt duct seal is an approved compound. I was on saem job where we have some fuel guys today installing gas pumps on a separate project and I happend to notice them shoving duct seal inside the seal off. I stopped and said I didnt know duct seal was an approved compound for a seal off in a class 1 div2 location. Everyone of those guys said yes. I was hoping to find a code reference as to the type of approved method for this application but cant find it. I am prettty surre its not approved but I also am not certain. The last time I installed seal offs we used Chico with fiber mesh and circuits had to be separated. These guys were just shoving them inside conduit. Just for peace of mind I would like to know a code reference or UL listing duct seal as an approved compound.
seal compund
- Thread starter mannyb
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Ragin Cajun
Senior Member
- Location
- Upstate S.C.
I don't have one handy, but Crouse Hinds catalog and their hazardous handbook have all the info you need.
- Location
- Bremerton, Washington
110.3(B) is what backs up Ragin Cajun.
Have your fuel guys look up 510.15(C) (2) Compound, and (3) Thickness of Compounds
I have poured seals, can't pour duct seal. I did notice the melting point is not less than 200 deg F. I suspect duct seal melts much below that.
Do your fuel guys ever get inspections.? Seems like waste to install a seal and then not seal it correctly.
Perhaps a refresher is in order for your fuel guys...
Here is a great resource https://www.eaton.com/content/dam/e.../crouse-hinds/crouse-hinds-codedigest2017.pdf
Have your fuel guys look up 510.15(C) (2) Compound, and (3) Thickness of Compounds
I have poured seals, can't pour duct seal. I did notice the melting point is not less than 200 deg F. I suspect duct seal melts much below that.
Do your fuel guys ever get inspections.? Seems like waste to install a seal and then not seal it correctly.
Perhaps a refresher is in order for your fuel guys...
Here is a great resource https://www.eaton.com/content/dam/e.../crouse-hinds/crouse-hinds-codedigest2017.pdf
oldsparky52
Senior Member
- Location
- Wilmington, NC USA
The only thing you might be able to use duct seal for is to seal a conduit used in accordance with section 504.
It is a horrible damming material and it is not x-proof. Manufacturer instructions require you to use their packing material.
It is a horrible damming material and it is not x-proof. Manufacturer instructions require you to use their packing material.
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