Couplings with Seal
Couplings with Seal are used to join equal-diameter sections of spiral or galvanised steel ductwork, ensuring a secure mechanical connection while maintaining smooth airflow and system efficiency across commercial, industrial and residential ventilation layouts. Manufactured from corrosion-resistant galvanised steel to HVAC DW144, they are suitable for high, medium and low-pressure systems and provide a simple way to extend duct runs or connect components. Each coupling incorporates an integrated EPDM double-lip seal that delivers an airtight joint without mastic—retaining elasticity, resisting ageing and reducing leakage for improved energy efficiency, pressure performance and long-term installation reliability.
