| 摘要 |
Title GASKETLESS AIR DAMPER A gasketless air damper includes a cylindrical sleeve having an inwardly protruding integral seal ridge. A circular blade damper disposed for rotation in the sleeve has integral oppositely oriented edge seals that aerodynamically interact with airflow through the damper and which, in a closed position, provide for a eight gasketless seal between the damper blade and the seal ridge integrally formed in the damper sleeve. |
