SpiroFlex 75 gasket/plug set (pack of 10) for duct collar connections

SpiroFlex 75 gasket/plug set (pack of 10) includes ten rubber gaskets/plugs designed to seal 75 mm nominal diameter duct collar connections and pipe sockets. The set is intended for ventilation and HVAC installations where a reliable mechanical seal is required to reduce air leakage at collar joints. Each gasket/plug conforms to the 75 mm collar profile and provides a compact, elastic seal suitable for repair, replacement or new installations in commercial and residential ductwork.

Advantages

The SpiroFlex 75 gaskets/plugs are made from elastic sealing material that adapts to minor irregularities in mating surfaces, ensuring a continuous contact seal around the collar circumference. Supplied as a pack of 10, the set allows multiple connections or staged replacements to be completed without individual purchases. The compact design preserves internal duct dimensions while creating a durable barrier against air leakage, reducing the risk of pressure loss and improving HVAC system efficiency when correctly installed.

Suitable for

• Sealing 75 mm duct collar connections in ventilation systems
• Repairing or replacing worn or damaged collar seals
• New installations of round ducts and pipe sockets with 75 mm nominal diameter
• HVAC maintenance tasks requiring quick gasket swaps

Key specifications

• Material: elastic sealing compound suitable for ventilation use
• Nominal diameter compatibility: 75 mm collar/socket
• Quantity: 10 pieces per pack
• Shape: ring/plug profile designed to match collar geometry
• Function: mechanical seal to reduce air leakage at connections

How to use

Clean the collar and mating socket surfaces to remove dust, debris and old sealant before installation. Fit the gasket/plug into the collar or socket by aligning the profile with the mating edge and pressing it evenly around the circumference until seated. For adhesive or mechanical fastening methods, follow any compatible product instructions; the gasket itself provides the primary sealing effect by compression. Verify the seal visually and, if possible, by conducting an air-tightness check or pressure test according to your system procedures.

Usage recommendations

Store the pack in a dry, shaded area away from direct sunlight and extreme temperatures to preserve material elasticity. Inspect gaskets for cuts or deformation before use. Replace gaskets showing wear or permanent deformation to maintain effective sealing and system performance.