Exhaust Silencer Foam Insert – B/D/S Venturi

Sound-absorbing foam insert acts as a muffler to reduce noise levels.

N686 fits inside Exhaust Silencer Assembly N685. For Nortech/Guardair Legacy Drum Vacuums and Vacuum Generating Heads featuring B, D, and S venturi.

N886 fits inside Exhaust Silencer Assembly N885. For all Guardair Drum Vacuums and Vacuum Generating Heads featuring M venturi.