The Shop Vac Foam Sleeve part # 9058500 is used for picking up wet messes and is required when using reusable disc style filters. This foam sleeve fits most of the Shop Vac Utility Wet/Dry Vacuums. The foam filter must be installed unless a cartridge filter is installed.
The Shop Vac foam filter is compatible with most Shop-Vac Utility wet/dry vacuums 5 gallons in size and larger.