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$30.53

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

N686 fits inside Exhaust Silencer Assembly – N685. For all Guardair 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. 

  • Polyurethane-ether foam tube
  • (1) Exhaust Silencer Foam Insert
Part NumberDimensions
(L" x W" x H")
Weight (lbs)
Part Number N686 Dimensions
(L" x W" x H")
13.5 x 4.3 x 4.3
Weight (lbs) 0.2
Part Number N886 Dimensions
(L" x W" x H")
8.8 x 4.3 x 4.3
Weight (lbs) 0.1
  • Polyurethane-ether foam tube
  • (1) Exhaust Silencer Foam Insert
Part NumberDimensions
(L" x W" x H")
Weight (lbs)
Part Number N686 Dimensions
(L" x W" x H")
13.5 x 4.3 x 4.3
Weight (lbs) 0.2
Part Number N886 Dimensions
(L" x W" x H")
8.8 x 4.3 x 4.3
Weight (lbs) 0.1