Spiral Duct End Caps

Spiral ductwork is a type of round duct formed by continuously winding a strip of metal in a helical pattern. It is widely used in industrial ventilation, dust collection, and HVAC systems due to its structural strength, smooth interior airflow, and ease of installation compared to longitudinal seam duct.

End caps for ductwork come in several types including flat end caps for complete termination, dome or convex caps for pressure resistance, and flanged caps for bolted connections. For spiral duct, standard slip-on end caps are most common, designed to fit snugly over or inside the duct opening for a secure seal.

Duct Incorporated offers spiral duct end caps in standard sizes to match common spiral duct diameters used in industrial ventilation and dust collection systems. Specific sizing details and availability can be confirmed by contacting our team directly for a tailored recommendation.

Spiral duct end caps are typically fabricated from galvanized steel, which offers corrosion resistance and durability in industrial environments. Depending on the application, stainless steel or other materials may be specified for high-temperature, high-humidity, or chemically aggressive conditions.

Yes, spiral duct end caps are well-suited for dust collection applications. They effectively seal duct terminations to prevent dust and debris from escaping, maintain negative pressure within the system, and help ensure the overall efficiency and safety of dust collection installations.

Installation of a spiral duct end cap typically involves sliding or pressing the cap over the open end of the spiral duct until it seats securely. Sheet metal screws and foil tape or mastic sealant are commonly used to secure the cap and ensure an airtight seal. Duct Incorporated also provides installation tips upon request.