Caulking Compounds: While not exclusively made for HVAC applications, specific caulking compounds may be used to seal modest gaps and penetrations in ductwork. Deciding upon a compound with the required flexibility and warmth resistance is very important for making certain productive and sturdy seals. To acquire a very clear idea https://ducting-pu11986.mywikiparty.com/1536368/an_unbiased_view_of_polyurethane_ducting