💧 Gasket, Waterco Ultra Mite/HRV, Tank Lid, 8-5/8″ID, 9-1/2″OD
Made by Waterco, manufacturer part number 15B0100. It is listed for the equipment shown below, so check the model on your own unit against that list.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterco |
| Manufacturer part number | 15B0100 |
| Part Type | Gasket |
| Inside Diameter | 8-5/8″id |
| Outside Diameter | 9-1/2″od |
| Catalog description | Gasket, Waterco Ultra Mite/HRV, Tank Lid, 8-5/8″ID, 9-1/2″OD |
✅ Listed for
- Waterco/Baker Hydro HRV Series (Prior to 1984) Sand Filter
Exploded parts diagram: This part is shown as item #5 on the Cartridge Filter, Waterco, UltraMite/HydroMite, 12.5–150sqft exploded parts diagram.
🔧 Cartridge Filter, Waterco, UltraMite/HydroMite, 12.5–150sqft – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| 11 | 16-252-W001K11 |
| 10 | 16-252-W001K10 |
| 9 | Clamp Ring Nut, Waterco Baker Hydro Ultra Mite/HRV, 5/16-18 |
| 8 | Washer, Waterco Baker Hydro Ultra Mite/HRV, 5/16",Clamp Ring |
| 7 | 16-252-W001K7 |
| 6 | 16-252-W001K6 |
| 5 | Gasket, Waterco Ultra Mite/HRV, Tank Lid, 8-5/8"ID, 9-1/2"OD ◀ this part |
| 4 | Tank Lid, Waterco Baker Hydro Ultra Mite/HRV |
| 3 | Air Relief Knob, Waterco Baker Hydro Ultra Mite, Brass |
| 2a | Air Relief Tee, Waterco Baker Hydro Ultra Mite, Brass |
| 2 | Air Relief Kit, Waterco Baker Hydro Ultra Mite |
| 1 | Pressure Gauge, 1/4"mpt, 0-60psi, Bottom Mount, Generic |
🔧 Exploded diagram and parts
This part belongs to the Cartridge Filter, Waterco, UltraMite/HydroMite, 12.5150sqft assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
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