Special 558 BP ( 1 ) 3" Seal for Lower Assembly of the Fleck 3900, and ( 4 ) are used with 3900 Spacers, so order the quantity you need.
This is for a single seal which a Sub part of the Lower 3900 Seal and Spacers Kit and not a complete kit.
SPECIAL ORDER ITEM, Allow 2 - 3 weeks for delivery
If you need the Complete Lower Seals and Spacers kit, then you want to order part number 60132.
Note: the KIT comes with standard Seals, 16068, and not these special 558 BP Seals.
Part Number: 3441534
Usually Ships in 2 to 3 Weeks