Complete O-ring kits that make servicing easy Horizon is now utilizing the AS568A O-Ring standard used by the O-Ring industry in order to bring a standardized approach to the pool and spa industry. The current active Horizon part number for an o-ring is 90-423-5xxx, where xxx represents the AS568A designation. This designation ranges from -001 thru -932, in order of smallest to largest first by cross section then by diameter. Please see substitute item number under “Quick info” for the current SKU for this item.
Exploded parts diagram: This part is shown on the Cartridge Filter, Pent Am Prod, Commander exploded parts diagram.
🔧 Cartridge Filter, Pent Am Prod, Commander – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Ro-Kit 201 , American Commander Filter ◀ this part |
| 15 | Air Relief Valve, American Products Commander, 1/4", Generic |
| 13 | O-Ring, 3/8" ID, 3/32" Cross Section, Generic |
| 12 | Drain Plug, Pentair American Products Commander |
| 6 | 16-110-W029K6 |
| 5 | 16-110-W029K5 |
| 4 | Tank Lid, American Products, Commander, Val-Pak, Generic |
| 2 | O-Ring, 15/16" ID, 3/32" Cross Section, Generic |
| 1 | Lock Knob, American Products, Commander, Val-Pak, Generic |










